{"title":"Best Outdoor Greenhouse for Winter","description":null,"products":[{"product_id":"riga-iis-7x7-greenhouse","title":"Riga 2s 7x7 Greenhouse","description":"\u003ch2\u003e\u003cstrong\u003eRiga 2s (Riga IIs) 7x7 Greenhouse\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRiga 2s\u003c\/strong\u003e is the smallest and most affordable model in the Riga greenhouse series — the entry point to German-engineered, year-round growing. At 54 sq ft in a 7'8\" × 7' footprint, it is designed for beginner gardeners, urban growers, and anyone who wants a serious winter greenhouse in a compact space. Engineered and manufactured in Germany by Exaco with 28 years of experience, the Riga IIs features the same “onion” arch profile, 8mm\/10mm twin-wall polycarbonate glazing, automatic roof opener, and 15-year frame warranty as the larger Riga models — in the most space-efficient package in the lineup.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eDimensions \u0026amp; Growing Area\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7 feet 8 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7 feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight (peak)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7 feet 2 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrowing Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e54 square feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExpandable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eRiga Series Comparison - Which model is best for you?\u003c\/h2\u003e\n\u003ctable style=\"width: 100.089%; height: 161.75px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 22.6622%; height: 19.5938px;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"width: 17.2664%; height: 19.5938px;\"\u003eWidth\u003c\/th\u003e\n\u003cth style=\"width: 9.35265%; height: 19.5938px;\"\u003eLength\u003c\/th\u003e\n\u003cth style=\"width: 8.99293%; height: 19.5938px;\"\u003eHeight\u003c\/th\u003e\n\u003cth style=\"width: 27.7685%; height: 19.5938px;\"\u003eArea\u003c\/th\u003e\n\u003cth style=\"width: 12.1601%; height: 19.5938px;\"\u003eStarting Price\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.6622%; height: 19.5938px;\"\u003e\u003cstrong\u003eRiga 2s\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 17.2664%; height: 19.5938px;\"\u003e\u003cstrong\u003e7'4\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.35265%; height: 19.5938px;\"\u003e\u003cstrong\u003e7'\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 8.99293%; height: 19.5938px;\"\u003e\u003cstrong\u003e7'\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 27.7685%; height: 19.5938px;\"\u003e\u003cstrong\u003e~48 sq ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 12.1601%; height: 19.5938px;\"\u003e\u003cstrong\u003e{{price_riga_2s}}\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.5938px;\"\u003e\n\u003ctd style=\"width: 22.6622%; height: 24.5938px;\"\u003eRiga 3s\u003c\/td\u003e\n\u003ctd style=\"width: 17.2664%; height: 24.5938px;\"\u003e7'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.35265%; height: 24.5938px;\"\u003e10'6\"\u003c\/td\u003e\n\u003ctd style=\"width: 8.99293%; height: 24.5938px;\"\u003e7'1\"\u003c\/td\u003e\n\u003ctd style=\"width: 27.7685%; height: 24.5938px;\"\u003e81 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 12.1601%; height: 24.5938px;\"\u003e{{price_riga_3s}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.6622%; height: 19.5938px;\"\u003eRiga 3\u003c\/td\u003e\n\u003ctd style=\"width: 17.2664%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.35265%; height: 19.5938px;\"\u003e10'6\"\u003c\/td\u003e\n\u003ctd style=\"width: 8.99293%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 27.7685%; height: 19.5938px;\"\u003e102 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 12.1601%; height: 19.5938px;\"\u003e{{price_riga_3}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.6622%; height: 19.5938px;\"\u003eRiga 4s\u003c\/td\u003e\n\u003ctd style=\"width: 17.2664%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.35265%; height: 19.5938px;\"\u003e13'10\"\u003c\/td\u003e\n\u003ctd style=\"width: 8.99293%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 27.7685%; height: 19.5938px;\"\u003e~130 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 12.1601%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_4s}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.6622%; height: 19.5938px;\"\u003eRiga 4\u003c\/td\u003e\n\u003ctd style=\"width: 17.2664%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.35265%; height: 19.5938px;\"\u003e13'10\"\u003c\/td\u003e\n\u003ctd style=\"width: 8.99293%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 27.7685%; height: 19.5938px;\"\u003e~130 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 12.1601%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_4}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.6622%; height: 19.5938px;\"\u003eRiga 5\u003c\/td\u003e\n\u003ctd style=\"width: 17.2664%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.35265%; height: 19.5938px;\"\u003e17'6\"\u003c\/td\u003e\n\u003ctd style=\"width: 8.99293%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 27.7685%; height: 19.5938px;\"\u003e165 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 12.1601%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_5}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.6622%; height: 19.5938px;\"\u003eRiga XL series\u003c\/td\u003e\n\u003ctd style=\"width: 17.2664%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.35265%; height: 19.5938px;\"\u003eUp to 30'+\u003c\/td\u003e\n\u003ctd style=\"width: 8.99293%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 27.7685%; height: 19.5938px;\"\u003eUp to 300+ sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 12.1601%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_xl_6}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe Riga 2s is the most affordable entry point to the Riga series. If you need more length in the same narrow footprint, the Riga 3s extends to 10'6\" for $540 more. If you need more width and headroom, the Riga 3 steps up to the 9'8\" wide series for $810 more. All models share the same German manufacturing, glazing system, and warranty.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga 2s a good starter greenhouse?\u003c\/strong\u003e\u003cbr\u003eYes — the Riga 2s is the most affordable model in the Riga series and an excellent first greenhouse for serious growers. It delivers the same German engineering, 8mm\/10mm twin-wall polycarbonate glazing, automatic roof opener, and 15-year frame warranty as the larger Riga models. The 54 sq ft footprint is compact but functional — sufficient for seedling propagation, overwintering tender plants, and year-round growing of herbs, greens, and small vegetables.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Riga 2s and the Riga 3s?\u003c\/strong\u003e\u003cbr\u003eThe Riga 2s is 7' long (54 sq ft); the Riga 3s is 10'6\" long (81 sq ft). Both are 7'8\" wide and share the same glazing, frame, and warranty. The Riga 3s adds 27 sq ft of growing area for approximately $500 more. If your site can accommodate the extra length, the Riga 3s is the better long-term value. Choose the Riga 2s if you have a strict 7-foot length constraint.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need the base kit (foundation frame)?\u003c\/strong\u003e\u003cbr\u003eThe base kit is strongly recommended for soil or lawn installations. It is a ground-installation frame buried in a trench and backfilled with soil to anchor the greenhouse and raise the interior height. Without a proper foundation, the greenhouse may shift over time. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the automatic roof opener work?\u003c\/strong\u003e\u003cbr\u003eThe automatic roof opener uses a wax-cylinder mechanism that expands and contracts with temperature changes — no electricity required. When the interior temperature rises above a set threshold (typically around 65–70°F), the opener automatically pushes the roof window open to ventilate. When the temperature drops, it closes automatically.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the Riga 2s handle heavy snow loads?\u003c\/strong\u003e\u003cbr\u003eYes — the “onion” arch profile sheds snow automatically. The Riga 2s has been tested against winds up to 100 mph and has never been blown away when properly anchored.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga 2s expandable?\u003c\/strong\u003e\u003cbr\u003eNo — the Riga 2s is a fixed-length model. If you anticipate needing more space in the future, consider starting with the Riga 3s (same width, longer) or the Riga XL series (expandable by adding sections).\u003c\/p\u003e","brand":"Exaco","offers":[{"title":"No - Skip Foundation Frame \/ No Upgrade","offer_id":59733986803998,"sku":"RIGA-IIS-NOBASE","price":4699.0,"currency_code":"USD","in_stock":true},{"title":"No - Skip Foundation Frame \/ Add Premium Upgrade","offer_id":59733986836766,"sku":"RIGA-IIS-UPG-NOBASE","price":6598.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ No Upgrade","offer_id":59733956395294,"sku":"RIGA-IIS-FREEBASE","price":4699.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Add Premium Upgrade","offer_id":59733956428062,"sku":"RIGA-IIS-UPG-FREEBASE","price":6598.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/riga_2s.jpg?v=1786469171"},{"product_id":"riga-xl-9-professional-greenhouse","title":"Riga XL 9 14 x 29 Greenhouse","description":"\u003ch2\u003e\u003cstrong\u003eRiga XL 9 Greenhouse — 14’ × 29’6” | 413 sq ft | Professional-Grade\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRiga XL 9\u003c\/strong\u003e is the largest model in the Riga XL series — 413 sq ft of growing area in a 14-foot wide, 9'10\" tall structure with \u003cstrong\u003e8 automatic roof openers\u003c\/strong\u003e for full-length ventilation control. Built for serious gardeners, plant enthusiasts, schools, and small commercial growers who need maximum capacity and professional-grade winter performance. Like all Riga XL models, it features 16mm triple-wall polycarbonate glazing (R\/K-value up to 2.5), two Dutch doors (front and rear), and is expandable by adding additional sections. Designed, engineered, and manufactured in Germany by Exaco with 28 years of experience.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShips in 1–2 weeks.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eWhat’s Included — Basic Package\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e16mm UV-coated triple-wall polycarbonate glazing\u003c\/strong\u003e — significantly higher insulation than standard twin-wall models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 roof windows\u003c\/strong\u003e with automatic openers — full-length ventilation control\u003c\/li\u003e\n\u003cli\u003eTwo wide Dutch barn-style doors with keyed locks (37.5\" W × 74\" H) — one front, one rear\u003c\/li\u003e\n\u003cli\u003eFirst-class insulation — R\/K-value up to 2.5\u003c\/li\u003e\n\u003cli\u003eExtremely heavy-duty aluminum frame construction\u003c\/li\u003e\n\u003cli\u003e15-year warranty on aluminum frame\u003c\/li\u003e\n\u003cli\u003e10-year pro-rated warranty on polycarbonate panels (pro-rated after year 5)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuild Your Package — Available Add-Ons\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eWhat It Does\u003c\/th\u003e\n\u003cth\u003eAdded Cost\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Kit (Foundation Frame)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy-duty I-beam foundation frame; buried in trench and backfilled to anchor the greenhouse and add interior height. Strongly recommended for soil\/lawn installations.\u003c\/td\u003e\n\u003ctd\u003e+$3,149.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePremium Upgrade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUpgrades glazing or components to premium specification — contact us for details\u003c\/td\u003e\n\u003ctd\u003eSee pricing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eRiga XL Series Comparison — XL 6 vs. XL 9\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/riga-xl-6-professional-greenhouse\"\u003eRiga XL 6\u003c\/a\u003e\u003c\/th\u003e\n\u003cth\u003eRiga XL 9 (this model)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e19'10\"\u003c\/td\u003e\n\u003ctd\u003e29'6\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrowing Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e280 sq ft\u003c\/td\u003e\n\u003ctd\u003e413 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoof Windows\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 (auto openers)\u003c\/td\u003e\n\u003ctd\u003e8 (auto openers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Kit Cost\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+$2,199\u003c\/td\u003e\n\u003ctd\u003e+$3,149\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStarting Price\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$18,499\u003c\/td\u003e\n\u003ctd\u003e$22,999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLarge home gardens; serious hobbyists\u003c\/td\u003e\n\u003ctd\u003eMaximum capacity; schools; small commercial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBoth XL models share the same 14' width, 9'10\" peak height, 16mm triple-wall glazing, R\/K-value 2.5, and two Dutch doors. The XL 9 adds 9'8\" of length, 133 sq ft of growing area, and 4 additional automatic roof openers. Both are expandable by adding sections.\u003c\/p\u003e\n\u003ch3\u003eRiga XL vs. Standard Riga Series\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eRiga XL 9 (this model)\u003c\/th\u003e\n\u003cth\u003eStandard Riga (e.g., \u003ca href=\"\/products\/riga-iv-9x14-greenhouse\"\u003eRiga IV\u003c\/a\u003e)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGlazing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16mm triple-wall polycarbonate\u003c\/td\u003e\n\u003ctd\u003e8mm twin-wall (sides\/roof)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation R\/K-Value\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 2.5\u003c\/td\u003e\n\u003ctd\u003eUp to 1.89\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14 feet\u003c\/td\u003e\n\u003ctd\u003eUp to 9'8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePeak Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9'10\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrowing Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e413 sq ft\u003c\/td\u003e\n\u003ctd\u003eUp to 165 sq ft (Riga V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoof Windows\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 (auto openers)\u003c\/td\u003e\n\u003ctd\u003e1–2 (auto openers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDoors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Dutch doors (front + rear)\u003c\/td\u003e\n\u003ctd\u003e1 Dutch door\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExpandable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the Riga XL 9 have 8 roof windows?\u003c\/strong\u003e\u003cbr\u003eThe 29'6\" length of the Riga XL 9 requires 8 automatic roof openers to provide adequate ventilation across the full interior. Each opener covers a section of the greenhouse, allowing independent temperature regulation along the full length. Without sufficient roof ventilation, the far ends of a long greenhouse can overheat on warm days even when the center is comfortable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga XL 9 suitable for schools and educational programs?\u003c\/strong\u003e\u003cbr\u003eYes — the Riga XL 9 is well-suited for school greenhouse programs, horticultural education, and community growing projects. The 413 sq ft interior provides ample space for multiple growing stations, the 9'10\" peak height accommodates tall plants and vertical growing systems, and the front and rear Dutch doors allow easy access from both ends for classroom groups. The 15-year frame warranty and professional-grade construction make it a sound long-term investment for institutional use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Riga XL 9 and the Riga XL 6?\u003c\/strong\u003e\u003cbr\u003eBoth models share the same 14' width, 9'10\" peak height, 16mm triple-wall glazing, R\/K-value 2.5, and two Dutch doors. The XL 9 is 9'8\" longer (29'6\" vs. 19'10\"), adds 133 sq ft of growing area (413 vs. 280 sq ft), and includes 8 automatic roof openers vs. 4. The XL 9 base kit costs $3,149 vs. $2,199 for the XL 6. Choose the XL 6 if 280 sq ft meets your needs; choose the XL 9 for maximum capacity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga XL 9 expandable?\u003c\/strong\u003e\u003cbr\u003eYes — the Riga XL series is designed to be expanded by adding additional sections. Contact us to discuss expansion options and pricing for your specific configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need the base kit?\u003c\/strong\u003e\u003cbr\u003eThe heavy-duty I-beam base kit (+$3,149) is strongly recommended for soil or lawn installations. It provides a robust foundation appropriate for the large footprint and heavy construction of the XL 9. If installing on an existing concrete pad, contact us to discuss anchoring options.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does assembly take?\u003c\/strong\u003e\u003cbr\u003eAssembly requires 2–3 people and approximately 2 full days. Written instructions are included. Due to the scale and weight of the XL 9 components, we recommend 3 people and the Riga assembly facilitation kit (metric tape, 10mm wrenches, ratchet straps, Boss 399 silicone caulk, window restraint cables), available separately.\u003c\/p\u003e","brand":"Exaco","offers":[{"title":"No - Skip Foundation Frame \/ No Upgrade","offer_id":59517634609438,"sku":"RIGA-XL-9","price":22999.0,"currency_code":"USD","in_stock":true},{"title":"No - Skip Foundation Frame \/ Add Premium Upgrade","offer_id":59517634576670,"sku":"RIGA-XL-9-UPG","price":26798.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ No Upgrade","offer_id":59517634543902,"sku":"RIGA-XL-9-BASE","price":26148.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Add Premium Upgrade","offer_id":59517634511134,"sku":"RIGA-XL-9-UPG-BASE","price":29947.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/Riga_XL_7.1.jpg?v=1786475564"},{"product_id":"riga-xl-6-professional-greenhouse","title":"Riga XL 6 14 x 19 Greenhouse","description":"\u003ch2\u003e\u003cstrong\u003eRiga XL 6 Greenhouse — 14’ × 19’10” | 280 sq ft | Professional-Grade\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRiga XL 6\u003c\/strong\u003e is the entry point to the Riga XL series — a professional-grade, large-format greenhouse engineered for serious growers, serious hobbyists, and small-scale commercial operations. At 280 sq ft with 9'10\" of peak headroom, it is a fundamentally different product from the standard Riga series: \u003cstrong\u003e16mm triple-wall polycarbonate glazing\u003c\/strong\u003e (vs. 8mm twin-wall on the standard Riga), \u003cstrong\u003e4 automatic roof openers\u003c\/strong\u003e, \u003cstrong\u003etwo Dutch doors\u003c\/strong\u003e (front and rear), and an insulation R\/K-value of up to 2.5 (vs. 1.89 on the standard series). Designed, engineered, and manufactured in Germany by Exaco with 28 years of experience. Expandable — additional sections can be added to increase length.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eWhat’s Included — Basic Package\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e16mm UV-coated triple-wall polycarbonate glazing\u003c\/strong\u003e — significantly higher insulation than standard twin-wall models\u003c\/li\u003e\n\u003cli\u003e4 roof windows with automatic openers\u003c\/li\u003e\n\u003cli\u003eTwo wide Dutch barn-style doors with keyed locks (37.5\" W × 74\" H) — one front, one rear\u003c\/li\u003e\n\u003cli\u003eFirst-class insulation — R\/K-value up to 2.5\u003c\/li\u003e\n\u003cli\u003eExtremely heavy-duty aluminum frame construction\u003c\/li\u003e\n\u003cli\u003e15-year warranty on aluminum frame\u003c\/li\u003e\n\u003cli\u003e10-year pro-rated warranty on polycarbonate panels (pro-rated after year 5)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuild Your Package — Available Add-Ons\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eWhat It Does\u003c\/th\u003e\n\u003cth\u003eAdded Cost\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Kit (Foundation Frame)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy-duty I-beam foundation frame; buried in trench and backfilled to anchor the greenhouse and add interior height. Strongly recommended for soil\/lawn installations.\u003c\/td\u003e\n\u003ctd\u003e+$2,199.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePremium Upgrade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUpgrades glazing or components to premium specification — contact us for details\u003c\/td\u003e\n\u003ctd\u003eSee pricing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\n\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eRiga XL vs. Standard Riga Series — Key Differences\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eRiga XL 6 (this model)\u003c\/th\u003e\n\u003cth\u003eStandard Riga (e.g., \u003ca href=\"\/products\/riga-iv-9x14-greenhouse\"\u003eRiga IV\u003c\/a\u003e)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGlazing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16mm triple-wall polycarbonate\u003c\/td\u003e\n\u003ctd\u003e8mm twin-wall (sides\/roof)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation R\/K-Value\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 2.5\u003c\/td\u003e\n\u003ctd\u003eUp to 1.89\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14 feet\u003c\/td\u003e\n\u003ctd\u003eUp to 9'8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePeak Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9'10\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrowing Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e280 sq ft\u003c\/td\u003e\n\u003ctd\u003eUp to 165 sq ft (Riga V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoof Windows\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 (auto openers)\u003c\/td\u003e\n\u003ctd\u003e1–2 (auto openers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDoors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 Dutch doors (front + rear)\u003c\/td\u003e\n\u003ctd\u003e1 Dutch door\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExpandable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAssembly\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2–3 people, ~2 days\u003c\/td\u003e\n\u003ctd\u003e2 people, ~1 day\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStarting Price\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$18,499\u003c\/td\u003e\n\u003ctd\u003eFrom $5,939\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe Riga XL series is not simply a larger version of the standard Riga — it is a different product tier with heavier construction, superior glazing, and significantly more interior volume. The 9'10\" peak height allows full-size fruit trees, tall tomato cages, and standing-height work throughout the entire interior.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes the Riga XL different from the standard Riga series?\u003c\/strong\u003e\u003cbr\u003eThe Riga XL uses 16mm triple-wall polycarbonate glazing (vs. 8mm twin-wall on the standard series), achieving an R\/K-value of up to 2.5 vs. 1.89. It is 14 feet wide (vs. 7'4\"–9'8\" for standard models), 9'10\" tall (vs. 7'–7'7\"), has 4 automatic roof openers (vs. 1–2), two Dutch doors (vs. one), and is expandable by adding sections. It requires 2–3 people and approximately 2 days to assemble. The Riga XL is designed for growers who need professional-grade performance, maximum interior volume, and long-term expandability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga XL 6 expandable?\u003c\/strong\u003e\u003cbr\u003eYes — unlike the standard Riga series (which are all fixed-length), the Riga XL series is designed to be expanded by adding additional sections. Contact us to discuss expansion options and pricing for your specific configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between 16mm triple-wall and 8mm twin-wall polycarbonate?\u003c\/strong\u003e\u003cbr\u003eTriple-wall polycarbonate has three layers of material with two air channels, vs. twin-wall’s two layers and one air channel. The additional layer significantly improves insulation — the Riga XL achieves R\/K-value up to 2.5 vs. 1.89 for the standard Riga series. This translates to lower heating costs in winter and better temperature stability year-round. The 16mm thickness also provides greater structural rigidity and impact resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the Riga XL have two Dutch doors?\u003c\/strong\u003e\u003cbr\u003eThe 14-foot width and 280 sq ft interior of the Riga XL 6 benefits from front and rear access for workflow efficiency — bringing in supplies from one end and moving harvests out the other without navigating the full length of the greenhouse. The rear door also provides additional ventilation options independent of the roof windows.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need the base kit?\u003c\/strong\u003e\u003cbr\u003eThe heavy-duty I-beam base kit (+$2,199) is strongly recommended for soil or lawn installations. It provides a more robust foundation than the standard Riga base kits, appropriate for the larger footprint and heavier construction of the XL series. If installing on an existing concrete pad, contact us to discuss anchoring options.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does assembly take?\u003c\/strong\u003e\u003cbr\u003eAssembly requires 2–3 people and approximately 2 full days. Written instructions are included. Due to the larger scale and heavier components of the XL series, we recommend having 3 people for the assembly and using the Riga assembly facilitation kit (metric tape, 10mm wrenches, ratchet straps, Boss 399 silicone caulk, window restraint cables), available separately.\u003c\/p\u003e","brand":"Exaco","offers":[{"title":"No - Skip Foundation Frame \/ No Upgrade","offer_id":59517634740510,"sku":"RIGA-XL-6","price":18499.0,"currency_code":"USD","in_stock":true},{"title":"No - Skip Foundation Frame \/ Add Premium Upgrade","offer_id":59517634707742,"sku":"RIGA-XL-6-UPG","price":21599.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ No Upgrade","offer_id":59517634674974,"sku":"RIGA-XL-6-BASE","price":20698.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Add Premium Upgrade","offer_id":59517634642206,"sku":"RIGA-XL-6-UPG-BASE","price":23798.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/Riga_XL_7.1.jpg?v=1786475564"},{"product_id":"riga-ivs-7x14-greenhouse","title":"Riga 4s 7x14 Greenhouse","description":"\u003ch2\u003e\u003cstrong\u003eRiga 4s (Riga IVs) 7x14 Greenhouse\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRiga 4s\u003c\/strong\u003e is the narrow-width 14-foot model in the Riga series — 108 sq ft of growing area in the compact 7'8\" wide footprint of the IIs\/IIIs series, extended to 14 feet in length. It includes two automatic roof openers for superior ventilation across the longer interior. Designed, engineered, and manufactured in Germany by KGT\/Hoklartherm with 28 years of experience, the Riga 4s is built for serious year-round growing in gardens where the wider 9'8\" Riga 4 won’t fit.\u003c\/p\u003e\n\u003ch2\u003eWhat’s Included — Basic Package\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e8mm UV-coated translucent twin-wall polycarbonate panels — sides and roof\u003c\/li\u003e\n\u003cli\u003e10mm translucent twin-wall polycarbonate panels — front and rear gables (added strength)\u003c\/li\u003e\n\u003cli\u003e2 roof windows (40\" W × 24\" D each) with automatic openers\u003c\/li\u003e\n\u003cli\u003e1 oversized rear wall window (30\" W × 42\" H) with adjustment arm\u003c\/li\u003e\n\u003cli\u003eHeavy-duty Dutch barn-style door with keyed lock (30\" W × 72\" H)\u003c\/li\u003e\n\u003cli\u003eFirst-class insulation — R\/K-value up to 1.89\u003c\/li\u003e\n\u003cli\u003e15-year warranty on aluminum frame\u003c\/li\u003e\n\u003cli\u003e10-year pro-rated warranty on polycarbonate panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRiga IVs vs. Riga IV — Narrow vs. Wide 14-Foot Models\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eRiga 4s (this model)\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/riga-iv-9x14-greenhouse\"\u003eRiga 4\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7'8\"\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14'\u003c\/td\u003e\n\u003ctd\u003e14'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7'1\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrowing Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e108 sq ft\u003c\/td\u003e\n\u003ctd\u003e135 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoof Windows\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 (auto openers)\u003c\/td\u003e\n\u003ctd\u003e2 (auto openers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStarting Price\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e{{price_riga_4s}}\u003c\/td\u003e\n\u003ctd\u003e{{price_riga_4}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNarrow lots; side yards; tight spaces\u003c\/td\u003e\n\u003ctd\u003eMore interior width and headroom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBoth models are 14 feet long with 2 automatic roof openers. The Riga IV is 2 feet wider and 6 inches taller, adding 27 sq ft of growing area. If your site can accommodate the extra width, the Riga IV is the better long-term investment. Choose the Riga IVs for narrow lots where the 9'8\" width won’t fit.\u003c\/p\u003e\n\u003ch3\u003eRiga Series Comparison\u003c\/h3\u003e\n\u003ctable style=\"width: 100.089%; height: 161.75px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 24.9542%; height: 19.5938px;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"width: 19.1588%; height: 19.5938px;\"\u003eWidth\u003c\/th\u003e\n\u003cth style=\"width: 1.85529%; height: 19.5938px;\"\u003eLength\u003c\/th\u003e\n\u003cth style=\"width: 9.38128%; height: 19.5938px;\"\u003eHeight\u003c\/th\u003e\n\u003cth style=\"width: 19.3254%; height: 19.5938px;\"\u003eArea\u003c\/th\u003e\n\u003cth style=\"width: 23.2656%; height: 19.5938px;\"\u003eStarting Price\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.9542%; height: 19.5938px;\"\u003eRiga 2s\u003c\/td\u003e\n\u003ctd style=\"width: 19.1588%; height: 19.5938px;\"\u003e7'4\"\u003c\/td\u003e\n\u003ctd style=\"width: 1.85529%; height: 19.5938px;\"\u003e7'\u003c\/td\u003e\n\u003ctd style=\"width: 9.38128%; height: 19.5938px;\"\u003e7'\u003c\/td\u003e\n\u003ctd style=\"width: 19.3254%; height: 19.5938px;\"\u003e~48 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 23.2656%; height: 19.5938px;\"\u003e{{price_riga_2s}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.5938px;\"\u003e\n\u003ctd style=\"width: 24.9542%; height: 24.5938px;\"\u003eRiga 3s\u003c\/td\u003e\n\u003ctd style=\"width: 19.1588%; height: 24.5938px;\"\u003e7'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 1.85529%; height: 24.5938px;\"\u003e10'6\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.38128%; height: 24.5938px;\"\u003e7'1\"\u003c\/td\u003e\n\u003ctd style=\"width: 19.3254%; height: 24.5938px;\"\u003e81 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 23.2656%; height: 24.5938px;\"\u003e{{price_riga_3s}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.9542%; height: 19.5938px;\"\u003eRiga 3\u003c\/td\u003e\n\u003ctd style=\"width: 19.1588%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 1.85529%; height: 19.5938px;\"\u003e10'6\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.38128%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 19.3254%; height: 19.5938px;\"\u003e102 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 23.2656%; height: 19.5938px;\"\u003e{{price_riga_3}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.9542%; height: 19.5938px;\"\u003e\u003cstrong\u003eRiga 4s\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 19.1588%; height: 19.5938px;\"\u003e\u003cstrong\u003e9'8\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 1.85529%; height: 19.5938px;\"\u003e\u003cstrong\u003e13'10\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 9.38128%; height: 19.5938px;\"\u003e\u003cstrong\u003e7'7\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 19.3254%; height: 19.5938px;\"\u003e\u003cstrong\u003e~130 sq ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 23.2656%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003e{{price_riga_4s}}\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.9542%; height: 19.5938px;\"\u003eRiga 4\u003c\/td\u003e\n\u003ctd style=\"width: 19.1588%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 1.85529%; height: 19.5938px;\"\u003e13'10\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.38128%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 19.3254%; height: 19.5938px;\"\u003e~130 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 23.2656%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_4}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.9542%; height: 19.5938px;\"\u003eRiga 5\u003c\/td\u003e\n\u003ctd style=\"width: 19.1588%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 1.85529%; height: 19.5938px;\"\u003e17'6\"\u003c\/td\u003e\n\u003ctd style=\"width: 9.38128%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 19.3254%; height: 19.5938px;\"\u003e165 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 23.2656%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_5}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.9542%; height: 19.5938px;\"\u003eRiga XL series\u003c\/td\u003e\n\u003ctd style=\"width: 19.1588%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 1.85529%; height: 19.5938px;\"\u003eUp to 30'+\u003c\/td\u003e\n\u003ctd style=\"width: 9.38128%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 19.3254%; height: 19.5938px;\"\u003eUp to 300+ sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 23.2656%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_xl_6}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003c\/h2\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Riga 4s and the Riga 4?\u003c\/strong\u003e\u003cbr\u003eBoth models are 14 feet long with 2 automatic roof openers. The Riga 4s is 7'8\" wide × 7'1\" tall (108 sq ft); the Riga IV is 9'8\" wide × 7'7\" tall (135 sq ft). The Riga 4s is the right choice for narrow lots where the wider Riga 4 won’t fit. If width is not a constraint, the Riga 4 offers 27 more sq ft of growing area and 6 more inches of peak height for approximately $630 more.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the Riga 4s have two roof windows?\u003c\/strong\u003e\u003cbr\u003eThe 14-foot length requires two roof windows to provide adequate ventilation across the full interior. A single roof window would leave the far end of the greenhouse with insufficient airflow on hot days. The two automatic openers work independently, allowing the greenhouse to self-regulate temperature along its full length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need the base kit (foundation frame)?\u003c\/strong\u003e\u003cbr\u003eThe base kit is strongly recommended for soil or lawn installations. The Riga 4s base kit is a 6\" H × 92\" W × 168\" D aluminum frame buried in a trench and backfilled with soil to anchor the greenhouse and raise the interior height by 6\". Without a proper foundation, the greenhouse may shift over time. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the Riga 4s handle heavy snow loads?\u003c\/strong\u003e\u003cbr\u003eYes — the “onion” arch profile sheds snow automatically. The Riga 4s has been tested against winds up to 100 mph and has never been blown away when properly anchored.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does assembly take?\u003c\/strong\u003e\u003cbr\u003eAssembly takes approximately one full day for two people. Written instructions are included. The Riga assembly facilitation kit (metric tape, 10mm wrenches, ratchet straps, Boss 399 silicone caulk, window restraint cables) is available separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga 4s expandable?\u003c\/strong\u003e\u003cbr\u003eNo — the Riga 4s is a fixed-length model. If you anticipate needing more space in the future, consider the Riga XL series, which is designed to be expandable by adding additional sections.\u003c\/p\u003e","brand":"KGT\/Hoklartherm","offers":[{"title":"No - Skip Foundation Frame \/ No Upgrade","offer_id":59734378152222,"sku":"RIGA-IVS-NOBASE","price":5599.0,"currency_code":"USD","in_stock":false},{"title":"No - Skip Foundation Frame \/ Add premium upgrade","offer_id":59734378184990,"sku":"RIGA-IVS-UPG-NOBASE","price":7949.0,"currency_code":"USD","in_stock":false},{"title":"Yes \/ No Upgrade","offer_id":59517634806046,"sku":"RIGA-IVS-FREEBASE","price":5599.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Add premium upgrade","offer_id":59517634773278,"sku":"RIGA-IVS-UPG-FREEBASE","price":7949.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/riga_4s_grandma.jpg?v=1786468196"},{"product_id":"riga-iv-9x14-greenhouse","title":"Riga 4 9x14 Greenhouse","description":"\u003ch2\u003e\u003cstrong\u003eRiga IV (Riga 4) 9x14 Greenhouse\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRiga IV\u003c\/strong\u003e is the mid-to-large model in the Riga series — 135 sq ft of growing area in the same 9'8\" wide footprint as the Riga III, extended to 14 feet in length. It is the first Riga model to include \u003cstrong\u003etwo automatic roof openers\u003c\/strong\u003e, providing superior ventilation for the longer interior. Designed, engineered, and manufactured in Germany by Exaco with 28 years of experience, the Riga IV is built for serious year-round growing with the same “onion” arch profile, 100 mph wind rating, and premium polycarbonate glazing as the rest of the Riga lineup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShips in 1–2 weeks.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eWhat’s Included — Basic Package\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8mm UV-coated translucent twin-wall polycarbonate panels — sides and roof\u003c\/li\u003e\n\u003cli\u003e10mm translucent twin-wall polycarbonate panels — front and rear gables (added strength)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 roof windows\u003c\/strong\u003e (40\" W × 24\" D each) with automatic openers\u003c\/li\u003e\n\u003cli\u003e1 oversized rear wall window (30\" W × 42\" H) with adjustment arm\u003c\/li\u003e\n\u003cli\u003eHeavy-duty Dutch barn-style door with keyed lock (30\" W × 72\" H)\u003c\/li\u003e\n\u003cli\u003eFirst-class insulation — R\/K-value up to 1.89\u003c\/li\u003e\n\u003cli\u003e15-year warranty on aluminum frame\u003c\/li\u003e\n\u003cli\u003e10-year pro-rated warranty on polycarbonate panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuild Your Package — Available Add-Ons\u003c\/h3\u003e\n\u003cp\u003eConfigure your Riga IV using the options above. Each add-on is included in the same shipment:\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eWhat It Does\u003c\/th\u003e\n\u003cth\u003eAdded Cost\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnchor Option\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnchoring hardware to secure the greenhouse to a concrete pad or foundation\u003c\/td\u003e\n\u003ctd\u003e+$99.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Kit (Foundation Frame)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6\" H × 116\" W × 168\" D ground-installation frame; buried in trench and backfilled with soil to anchor the greenhouse and add interior height. Strongly recommended for soil\/lawn installations.\u003c\/td\u003e\n\u003ctd\u003e+$1,499.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eRiga IV vs. Riga III — Key Differences\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eRiga IV (this model)\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/riga-iii-9x10-greenhouse\"\u003eRiga III\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14'\u003c\/td\u003e\n\u003ctd\u003e10'6\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrowing Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e135 sq ft\u003c\/td\u003e\n\u003ctd\u003e102 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoof Windows\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 (with auto openers)\u003c\/td\u003e\n\u003ctd\u003e1 (with auto opener)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Kit Cost\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+$1,499\u003c\/td\u003e\n\u003ctd\u003e+$1,299.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStarting Price\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$7,289\u003c\/td\u003e\n\u003ctd\u003e$6,209\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMore growing length; 2-zone ventilation; larger harvests\u003c\/td\u003e\n\u003ctd\u003eCompact footprint; smaller gardens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe Riga IV and Riga III share the same 9'8\" width and 7'7\" peak height. The Riga IV adds 3'6\" of length, 33 sq ft of growing area, and a second automatic roof opener for improved ventilation across the longer interior.\u003c\/p\u003e\n\u003ch3\u003eRiga Series Comparison\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003cth\u003eArea\u003c\/th\u003e\n\u003cth\u003eRoof Windows\u003c\/th\u003e\n\u003cth\u003eStarting Price\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IIs\u003c\/td\u003e\n\u003ctd\u003e7'4\"\u003c\/td\u003e\n\u003ctd\u003e7'\u003c\/td\u003e\n\u003ctd\u003e7'\u003c\/td\u003e\n\u003ctd\u003e~48 sq ft\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eSee listing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IIIs\u003c\/td\u003e\n\u003ctd\u003e7'8\"\u003c\/td\u003e\n\u003ctd\u003e10'6\"\u003c\/td\u003e\n\u003ctd\u003e7'1\"\u003c\/td\u003e\n\u003ctd\u003e81 sq ft\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e$5,939\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga III\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003e10'6\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003e102 sq ft\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e$6,209\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IVs\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003e13'10\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003e~130 sq ft\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eSee listing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRiga IV (this model)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e9'8\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e14'\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e7'7\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e135 sq ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e$7,289\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga V\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003e17'6\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003e165 sq ft\u003c\/td\u003e\n\u003ctd\u003e2+\u003c\/td\u003e\n\u003ctd\u003eSee listing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga XL series\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003eUp to 30'+\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003eUp to 300+ sq ft\u003c\/td\u003e\n\u003ctd\u003eMultiple\u003c\/td\u003e\n\u003ctd\u003eSee listing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the Riga IV have two roof windows instead of one?\u003c\/strong\u003e\u003cbr\u003eThe Riga IV’s 14-foot length requires two roof windows to provide adequate ventilation across the full interior. A single roof window at one end would leave the far end of the greenhouse with insufficient airflow on hot days. The two automatic openers work independently, allowing the greenhouse to self-regulate temperature along its full length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Riga IV and the Riga IVs?\u003c\/strong\u003e\u003cbr\u003eThe Riga IVs is the shorter “S” variant of the Riga IV series. Both models share the same 9'8\" width and 7'7\" height. Contact us for the specific length and pricing of the Riga IVs if you are comparing the two models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need the base kit (foundation frame)?\u003c\/strong\u003e\u003cbr\u003eThe base kit is strongly recommended for soil or lawn installations. The Riga IV base kit is a 6\" H × 116\" W × 168\" D aluminum frame buried in a trench and backfilled with soil to anchor the greenhouse and raise the interior height by 6\". Without a proper foundation, the greenhouse may shift over time. If installing on an existing concrete pad, the anchor option (+$99.99) may be more appropriate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the Riga IV handle heavy snow loads?\u003c\/strong\u003e\u003cbr\u003eYes — the “onion” arch profile sheds snow automatically. The Riga IV has been tested against winds up to 100 mph and has never been blown away when properly anchored with the base kit or anchor option.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does assembly take?\u003c\/strong\u003e\u003cbr\u003eAssembly takes approximately one full day for two people. Written instructions are included. The Riga assembly facilitation kit (metric tape, 10mm wrenches, ratchet straps, Boss 399 silicone caulk, window restraint cables) is available separately and contains all the specialized tools needed for the build.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga IV expandable?\u003c\/strong\u003e\u003cbr\u003eNo — the Riga IV is a fixed-length model. If you anticipate needing more space in the future, consider the Riga XL series, which is designed to be expandable by adding additional sections.\u003c\/p\u003e","brand":"Exaco","offers":[{"title":"No - Skip Foundation Frame \/ No Upgrade","offer_id":59734431236382,"sku":"RIGA-IV-NOBASE","price":7999.0,"currency_code":"USD","in_stock":false},{"title":"No - Skip Foundation Frame \/ Add Premium Upgrade","offer_id":59734431301918,"sku":"RIGA-IV-UPG-NOBASE","price":10349.0,"currency_code":"USD","in_stock":false},{"title":"Yes \/ No Upgrade","offer_id":59734431203614,"sku":"RIGA-IV-FREEBASE","price":7999.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Add Premium Upgrade","offer_id":59734431269150,"sku":"RIGA-IV-UPG-FREEBASE","price":10349.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/Riga_4.2.webp?v=1786471249"},{"product_id":"riga-3s-7x10-greenhouse","title":"Riga 3s 7x10 Greenhouse","description":"\u003ch2\u003e\u003cstrong\u003eRiga 3s (Riga IIIs) 7x10 Greenhouse\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRiga 3s\u003c\/strong\u003e is the second-smallest model in the Riga greenhouse series — a compact 81 sq ft structure built for serious year-round growing in limited-space gardens. Designed, engineered, and manufactured in Germany by Exaco with 28 years of experience, the Riga 3s features the signature “onion” arch profile that sheds snow automatically, maximizes interior headroom, and minimizes wind resistance. Tested against winds up to 100 mph and never blown away when properly anchored.\u003c\/p\u003e\n\u003ch2\u003eWhat’s Included — Basic Package\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e8mm UV-coated translucent twin-wall polycarbonate panels — sides and roof\u003c\/li\u003e\n\u003cli\u003e10mm translucent twin-wall polycarbonate panels — front and rear gables (added strength)\u003c\/li\u003e\n\u003cli\u003e1 roof window (40\" W × 24\" D) with automatic opener\u003c\/li\u003e\n\u003cli\u003e1 oversized rear wall window (30\" W × 42\" H) with adjustment arm\u003c\/li\u003e\n\u003cli\u003eHeavy-duty Dutch barn-style door with keyed lock (30\" W × 72\" H)\u003c\/li\u003e\n\u003cli\u003eFirst-class insulation — R\/K-value up to 1.89\u003c\/li\u003e\n\u003cli\u003e15-year warranty on aluminum frame\u003c\/li\u003e\n\u003cli\u003e10-year pro-rated warranty on polycarbonate panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRiga 3s vs. Riga 3 — Which Is Right for You?\u003c\/h2\u003e\n\u003ctable style=\"width: 100.089%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 15.1079%;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"width: 37.9496%;\"\u003eRiga 3s (this model)\u003c\/th\u003e\n\u003cth style=\"width: 46.223%;\"\u003e\u003ca href=\"\/products\/riga-iii-9x10-greenhouse\"\u003eRiga 3\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 15.1079%;\"\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 37.9496%;\"\u003e7'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003e9'8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 15.1079%;\"\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 37.9496%;\"\u003e10'6\"\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003e10'6\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 15.1079%;\"\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 37.9496%;\"\u003e7'1\"\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003e7'7\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 15.1079%;\"\u003e\u003cstrong\u003eGrowing Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 37.9496%;\"\u003e81 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003e102 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 15.1079%;\"\u003e\u003cstrong\u003eStarting Price\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 37.9496%;\"\u003e{{price_riga_3s}}\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003e{{price_riga_3}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 15.1079%;\"\u003e\u003cstrong\u003eBest For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 37.9496%;\"\u003eNarrow lots; tight side yards; smaller gardens\u003c\/td\u003e\n\u003ctd style=\"width: 46.223%;\"\u003eMore interior width and headroom; larger growing area\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBoth models share the same length (10'6\"), glazing system, and German manufacturing. The Riga 3 is 2 feet wider and 6 inches taller — a meaningful difference in interior working space and growing capacity. If your site can accommodate the extra width, the Riga 3 is the better long-term investment.\u003c\/p\u003e\n\u003ch3\u003eRiga Series Comparison\u003c\/h3\u003e\n\u003ctable style=\"width: 100.089%; height: 161.75px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 25.8132%; height: 19.5938px;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"width: 7.71381%; height: 19.5938px;\"\u003eWidth\u003c\/th\u003e\n\u003cth style=\"width: 12.8865%; height: 19.5938px;\"\u003eLength\u003c\/th\u003e\n\u003cth style=\"width: 8.65075%; height: 19.5938px;\"\u003eHeight\u003c\/th\u003e\n\u003cth style=\"width: 19.9511%; height: 19.5938px;\"\u003eArea\u003c\/th\u003e\n\u003cth style=\"width: 17.7783%; height: 19.5938px;\"\u003eStarting Price\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.8132%; height: 19.5938px;\"\u003eRiga 2s\u003c\/td\u003e\n\u003ctd style=\"width: 7.71381%; height: 19.5938px;\"\u003e7'4\"\u003c\/td\u003e\n\u003ctd style=\"width: 12.8865%; height: 19.5938px;\"\u003e7'\u003c\/td\u003e\n\u003ctd style=\"width: 8.65075%; height: 19.5938px;\"\u003e7'\u003c\/td\u003e\n\u003ctd style=\"width: 19.9511%; height: 19.5938px;\"\u003e~48 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 17.7783%; height: 19.5938px;\"\u003e{{price_riga_2s}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.5938px;\"\u003e\n\u003ctd style=\"width: 25.8132%; height: 24.5938px;\"\u003e\u003cstrong\u003eRiga 3s\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 7.71381%; height: 24.5938px;\"\u003e\u003cstrong\u003e7'8\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 12.8865%; height: 24.5938px;\"\u003e\u003cstrong\u003e10'6\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 8.65075%; height: 24.5938px;\"\u003e\u003cstrong\u003e7'1\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 19.9511%; height: 24.5938px;\"\u003e\u003cstrong\u003e81 sq ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 17.7783%; height: 24.5938px;\"\u003e\u003cstrong\u003e{{price_riga_3s}}\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.8132%; height: 19.5938px;\"\u003eRiga 3\u003c\/td\u003e\n\u003ctd style=\"width: 7.71381%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 12.8865%; height: 19.5938px;\"\u003e10'6\"\u003c\/td\u003e\n\u003ctd style=\"width: 8.65075%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 19.9511%; height: 19.5938px;\"\u003e102 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 17.7783%; height: 19.5938px;\"\u003e{{price_riga_3}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.8132%; height: 19.5938px;\"\u003eRiga 4s\u003c\/td\u003e\n\u003ctd style=\"width: 7.71381%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 12.8865%; height: 19.5938px;\"\u003e13'10\"\u003c\/td\u003e\n\u003ctd style=\"width: 8.65075%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 19.9511%; height: 19.5938px;\"\u003e~130 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 17.7783%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_4s}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.8132%; height: 19.5938px;\"\u003eRiga 4\u003c\/td\u003e\n\u003ctd style=\"width: 7.71381%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 12.8865%; height: 19.5938px;\"\u003e13'10\"\u003c\/td\u003e\n\u003ctd style=\"width: 8.65075%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 19.9511%; height: 19.5938px;\"\u003e~130 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 17.7783%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_4}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.8132%; height: 19.5938px;\"\u003eRiga 5\u003c\/td\u003e\n\u003ctd style=\"width: 7.71381%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 12.8865%; height: 19.5938px;\"\u003e17'6\"\u003c\/td\u003e\n\u003ctd style=\"width: 8.65075%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 19.9511%; height: 19.5938px;\"\u003e165 sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 17.7783%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_5}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 25.8132%; height: 19.5938px;\"\u003eRiga XL series\u003c\/td\u003e\n\u003ctd style=\"width: 7.71381%; height: 19.5938px;\"\u003e9'8\"\u003c\/td\u003e\n\u003ctd style=\"width: 12.8865%; height: 19.5938px;\"\u003eUp to 30'+\u003c\/td\u003e\n\u003ctd style=\"width: 8.65075%; height: 19.5938px;\"\u003e7'7\"\u003c\/td\u003e\n\u003ctd style=\"width: 19.9511%; height: 19.5938px;\"\u003eUp to 300+ sq ft\u003c\/td\u003e\n\u003ctd style=\"width: 17.7783%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e{{price_riga_xl_6}}\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Riga 3s and the Riga 3?\u003c\/strong\u003e\u003cbr\u003eThe Riga 3s is 7'8\" wide × 10'6\" long × 7'1\" tall with 81 sq ft of growing area. The Riga 3 is 9'8\" wide × 10'6\" long × 7'7\" tall with 102 sq ft. Both share the same length and glazing system, but the Riga 3 is 2 feet wider and 6 inches taller — offering significantly more interior working space. The Riga 3s is the better choice for narrow lots or tight side yards where the extra width won’t fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need the base kit (foundation frame)?\u003c\/strong\u003e\u003cbr\u003eThe base kit is strongly recommended for soil or lawn installations. The Riga 3s base kit is a 6\" H × 92\" W × 126\" D aluminum frame buried in a trench and backfilled with soil to anchor the greenhouse and raise the interior height by 6\". Without a proper foundation, the greenhouse may shift over time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the automatic roof opener work?\u003c\/strong\u003e\u003cbr\u003eThe automatic roof opener uses a wax-cylinder mechanism that expands and contracts with temperature changes — no electricity required. When the interior temperature rises above a set threshold (typically around 65–70°F), the opener automatically pushes the roof window open to ventilate. When the temperature drops, it closes automatically.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the Riga 3s handle heavy snow loads?\u003c\/strong\u003e\u003cbr\u003eYes — the “onion” arch profile sheds snow automatically. Snow slides off the curved surface rather than accumulating, preventing the structural loading that causes flat-roof greenhouses to collapse. The Riga 3s has been tested against winds up to 100 mph and has never been blown away when properly anchored.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does assembly take?\u003c\/strong\u003e\u003cbr\u003eAssembly takes approximately one full day for two people. Written instructions are included. The Riga assembly facilitation kit (metric tape, 10mm wrenches, ratchet straps, Boss 399 silicone caulk, window restraint cables) is available separately and contains all the specialized tools needed for the build.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga 3s expandable?\u003c\/strong\u003e\u003cbr\u003eNo — the Riga 3s is a fixed-length model and cannot be extended. If you anticipate needing more space in the future, consider the Riga XL series, which is designed to be expandable by adding additional sections.\u003c\/p\u003e","brand":"KGT\/Hoklartherm","offers":[{"title":"No - Skip Foundation Frame \/ No Upgrade","offer_id":59733992669470,"sku":"RIGA-IIIS-NOBASE","price":5099.0,"currency_code":"USD","in_stock":false},{"title":"No - Skip Foundation Frame \/ Add Premium Upgrade","offer_id":59733992636702,"sku":"RIGA-IIIS-UPG-NOBASE","price":7199.0,"currency_code":"USD","in_stock":false},{"title":"Yes \/ No Upgrade","offer_id":59517635199262,"sku":"RIGA-IIIS-FREEBASE","price":5099.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Add Premium Upgrade","offer_id":59517635166494,"sku":"RIGA-IIIS-UPG-FREEBASE","price":7199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/Riga_3s_exterior.png?v=1786398055"},{"product_id":"riga-iii-9x10-greenhouse","title":"Riga 3 9x10 Greenhouse","description":"\u003ch2\u003e\u003cstrong\u003eRiga III (Riga 3) 9x10 Greenhouse\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRiga III\u003c\/strong\u003e is the standard-width model in the Riga series — wider and taller than the Riga IIIs, with 102 sq ft of growing area in a space-efficient footprint that fits comfortably in smaller yards and urban gardens. Designed, engineered, and manufactured in Germany by Exaco with 28 years of experience, the Riga III is built for serious year-round growing, not just season extension. The signature “onion” arch profile sheds snow automatically, maximizes interior headroom, and minimizes wind resistance — tested against winds up to 100 mph and never blown away when properly anchored.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eWhat’s Included — Basic Package\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e8mm UV-coated translucent twin-wall polycarbonate panels — sides and roof\u003c\/li\u003e\n\u003cli\u003e10mm translucent twin-wall polycarbonate panels — front and rear gables (added strength)\u003c\/li\u003e\n\u003cli\u003e1 roof window (40\" W × 24\" D) with automatic opener\u003c\/li\u003e\n\u003cli\u003e1 oversized rear wall window (30\" W × 42\" H) with adjustment arm\u003c\/li\u003e\n\u003cli\u003eHeavy-duty Dutch barn-style door with keyed lock (30\" W × 72\" H)\u003c\/li\u003e\n\u003cli\u003eFirst-class insulation — R\/K-value up to 1.89\u003c\/li\u003e\n\u003cli\u003e15-year warranty on aluminum frame\u003c\/li\u003e\n\u003cli\u003e10-year pro-rated warranty on polycarbonate panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuild Your Package — Available Add-Ons\u003c\/h3\u003e\n\u003cp\u003eConfigure your Riga III using the options above. Each add-on is included in the same shipment:\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eWhat It Does\u003c\/th\u003e\n\u003cth\u003eAdded Cost\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnchor Option\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnchoring hardware to secure the greenhouse to a concrete pad or foundation\u003c\/td\u003e\n\u003ctd\u003e+$99.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Kit (Foundation Frame)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6\" H × 116\" W × 126\" D ground-installation frame; buried in trench and backfilled with soil to anchor the greenhouse and add interior height. Strongly recommended for soil\/lawn installations.\u003c\/td\u003e\n\u003ctd\u003e+$1,299.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePremium Upgrade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUpgrades glazing or components to premium specification — contact us for details on what’s included in the current premium upgrade\u003c\/td\u003e\n\u003ctd\u003eSee pricing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eRiga Series Comparison — Which Model Is Right for You?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003cth\u003eArea\u003c\/th\u003e\n\u003cth\u003eExpandable\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IIs\u003c\/td\u003e\n\u003ctd\u003e7'4\"\u003c\/td\u003e\n\u003ctd\u003e7'\u003c\/td\u003e\n\u003ctd\u003e7'\u003c\/td\u003e\n\u003ctd\u003e~48 sq ft\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IIIs\u003c\/td\u003e\n\u003ctd\u003e7'4\"\u003c\/td\u003e\n\u003ctd\u003e10'4\"\u003c\/td\u003e\n\u003ctd\u003e7'\u003c\/td\u003e\n\u003ctd\u003e~72 sq ft\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRiga III (this model)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e9'8\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e10'6\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e7'7\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e102 sq ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eNo\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IVs\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003e13'10\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003e~130 sq ft\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IV\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003e13'10\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003e~130 sq ft\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga V\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003e17'6\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003e165 sq ft\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga XL series\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003eUp to 30'+\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003eUp to 300+ sq ft\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe Riga III is the entry point to the 9'8\" wide Riga series — wider and taller than the IIs\/IIIs models, with the same premium German construction. If you need more length, the Riga IVs, IV, and V extend the same 9'8\" width footprint.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Riga III and the Riga IIIs?\u003c\/strong\u003e\u003cbr\u003eThe Riga IIIs (7'4\" wide × 10'4\" long × 7' tall, ~72 sq ft) is narrower and shorter than the Riga III (9'8\" wide × 10'6\" long × 7'7\" tall, 102 sq ft). The Riga III is the entry point to the wider 9'8\" Riga series, offering significantly more interior headroom and working width. Both are non-expandable and use the same German manufacturing and polycarbonate glazing system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need the base kit (foundation frame)?\u003c\/strong\u003e\u003cbr\u003eThe base kit is strongly recommended for soil or lawn installations. It is a 6\" H × 116\" W × 126\" D aluminum frame that is buried in a trench and backfilled with soil to anchor the greenhouse and raise the interior height by 6\". Without a proper foundation, the greenhouse may shift over time and the warranty may be affected. If you are installing on an existing concrete pad, the anchor option may be more appropriate than the base kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the automatic roof opener work?\u003c\/strong\u003e\u003cbr\u003eThe automatic roof opener uses a wax-cylinder mechanism that expands and contracts with temperature changes — no electricity required. When the interior temperature rises above a set threshold (typically around 65–70°F), the opener automatically pushes the roof window open to ventilate. When the temperature drops, it closes automatically. It requires no power and no manual adjustment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the Riga III handle heavy snow loads?\u003c\/strong\u003e\u003cbr\u003eYes — the “onion” arch profile is specifically designed to shed snow. Snow slides off the curved surface rather than accumulating, which prevents the structural loading that causes flat or low-pitch greenhouse roofs to collapse. The Riga III has been tested against winds up to 100 mph and has never been blown away when properly anchored with the base kit or anchor option.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does assembly take?\u003c\/strong\u003e\u003cbr\u003eAssembly takes approximately one full day for two people. Written instructions are included. The Riga assembly facilitation kit (metric tape, 10mm wrenches, ratchet straps, Boss 399 silicone caulk, window restraint cables) is available separately and contains all the specialized tools needed for the build.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga III expandable?\u003c\/strong\u003e\u003cbr\u003eNo — the Riga III is a fixed-length model and cannot be extended. If you anticipate needing more space in the future, consider the Riga XL series, which is designed to be expandable by adding additional sections.\u003c\/p\u003e","brand":"Exaco","offers":[{"title":"No - Skip Foundation Frame \/ No Upgrade","offer_id":59734408855838,"sku":"RIGA-III-NOBASE","price":5399.0,"currency_code":"USD","in_stock":false},{"title":"No - Skip Foundation Frame \/ Add Premium Upgrade","offer_id":59734408888606,"sku":"RIGA-III-UPG-NOBASE","price":7499.0,"currency_code":"USD","in_stock":false},{"title":"Yes \/ No Upgrade","offer_id":59517635461406,"sku":"RIGA-III-FREEBASE","price":5399.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Add Premium Upgrade","offer_id":59517635428638,"sku":"RIGA-III-UPG-FREEBASE","price":7499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/Riga_3.1.webp?v=1786470063"},{"product_id":"riga-v-9x17-greenhouse-german-made","title":"Riga 5 9x17 Greenhouse","description":"\u003ch2\u003e\u003cstrong\u003eRiga 5 9x17 Greenhouse – 165 sq ft | German-Made | Year-Round Growing\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRiga 5 (Riga V)\u003c\/strong\u003e is the second-largest model in the Riga greenhouse series — a serious, German-engineered year-round growing structure with 165 sq ft of growing space, 8mm twin-wall polycarbonate panels, and the iconic \"onion\" arch profile that sheds snow, maximizes headroom, and minimizes wind resistance. Designed and manufactured in Germany by a company with 28 years of experience, the Riga V is built for gardeners who want a true four-season greenhouse, not just a season extender.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8mm UV-coated twin-wall polycarbonate panels on sides and roof — superior insulation and light diffusion\u003c\/li\u003e\n\u003cli\u003e10mm twin-wall polycarbonate panels on front and rear — added strength at the most exposed surfaces\u003c\/li\u003e\n\u003cli\u003e4 roof windows (40\" W × 24\" D each) with automatic openers — passive ventilation, no electricity required\u003c\/li\u003e\n\u003cli\u003e1 oversized rear wall window (30\" W × 42\" H) with adjustment arm — additional cross-ventilation\u003c\/li\u003e\n\u003cli\u003eHeavy-duty Dutch barn-style door with keyed lock (30\" wide × 72\" tall) — wheelbarrow-friendly, pest-resistant\u003c\/li\u003e\n\u003cli\u003eUnique \"onion\" arch profile — prevents snow buildup, maximizes interior headroom, minimizes wind resistance\u003c\/li\u003e\n\u003cli\u003eFirst-class insulation: R\/K-value up to 1.89\u003c\/li\u003e\n\u003cli\u003eWind-tested to 100 mph when properly anchored\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15-year warranty\u003c\/strong\u003e on aluminum frame | \u003cstrong\u003e10-year pro-rated warranty\u003c\/strong\u003e on polycarbonate panels\u003c\/li\u003e\n\u003cli\u003eShips in 1–2 weeks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eAdd-On Options\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eConfigure your Riga V at checkout with the following options:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnchor Option (+$99.99)\u003c\/strong\u003e — ground anchors for improved wind resistance; recommended for exposed sites\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Kit (+$1,749)\u003c\/strong\u003e — the Riga base frame (6\" H × 116\" W × 206\" D); highly recommended for proper installation and structural integrity. Without a base kit, a concrete or alternative foundation is required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Upgrade\u003c\/strong\u003e — contact us for details on what the Premium Upgrade includes for this model\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy the \"Onion\" Arch Profile?\u003c\/h3\u003e\n\u003cp\u003eThe Riga V’s distinctive curved arch profile — nicknamed the \"onion\" shape — is not just aesthetic. It delivers three structural advantages over conventional peaked or gothic-arch greenhouses:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSnow shedding\u003c\/strong\u003e — the curved profile causes snow to slide off naturally rather than accumulating, reducing structural load in heavy snowfall regions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum headroom\u003c\/strong\u003e — the arch shape maximizes usable interior height across the full width of the greenhouse, not just at the peak\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWind resistance\u003c\/strong\u003e — the rounded profile reduces wind drag compared to flat-sided structures, contributing to the 100 mph wind rating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow Does the Riga V Compare to Other Riga Models?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eGrowing Area\u003c\/th\u003e\n\u003cth\u003eBase Price\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga XL 8x20\u003c\/td\u003e\n\u003ctd\u003e8'4\" × 20'\u003c\/td\u003e\n\u003ctd\u003e~167 sq ft\u003c\/td\u003e\n\u003ctd\u003e~$9,500+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRiga V 9x17 (this model)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9'8\" × 17'6\"\u003c\/td\u003e\n\u003ctd\u003e165 sq ft\u003c\/td\u003e\n\u003ctd\u003e$8,279\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IV 9x14\u003c\/td\u003e\n\u003ctd\u003e9'8\" × 14'\u003c\/td\u003e\n\u003ctd\u003e~132 sq ft\u003c\/td\u003e\n\u003ctd\u003e~$7,000+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga III 9x11\u003c\/td\u003e\n\u003ctd\u003e9'8\" × 11'\u003c\/td\u003e\n\u003ctd\u003e~100 sq ft\u003c\/td\u003e\n\u003ctd\u003e~$5,500+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the Riga V greenhouse?\u003c\/strong\u003e\u003cbr\u003eThe Riga V (also called Riga 5) is the second-largest model in the Riga greenhouse series, manufactured in Germany. It features a distinctive curved \"onion\" arch profile, 8mm and 10mm twin-wall polycarbonate glazing, 4 automatic roof vents, and a 15-year frame warranty. At 165 sq ft, it’s designed for serious year-round growing in all climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga V a true four-season greenhouse?\u003c\/strong\u003e\u003cbr\u003eYes. The Riga V is engineered for year-round use, not just season extension. The 8mm polycarbonate panels provide an R\/K-value up to 1.89, the no-eaves arch profile sheds snow naturally, and the structure is wind-tested to 100 mph. With supplemental heating in colder climates (USDA zones 4–6), it can maintain frost-free growing conditions year-round.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the base kit required?\u003c\/strong\u003e\u003cbr\u003eA proper foundation is required for structural integrity and warranty compliance. The Riga base frame (+$1,749) is the recommended solution and is designed specifically for the Riga V footprint. Without the base kit, you will need to provide an alternative foundation (concrete pad or equivalent). The base kit is highly recommended for most installations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the anchor option include?\u003c\/strong\u003e\u003cbr\u003eThe anchor option (+$99.99) includes ground anchors that secure the Riga V base to the ground for improved wind resistance. It is particularly recommended for exposed sites or areas with regular high winds. The Riga V is wind-tested to 100 mph when properly anchored.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the Premium Upgrade?\u003c\/strong\u003e\u003cbr\u003eThe Premium Upgrade is an available add-on for the Riga V. Contact us directly for full details on what the Premium Upgrade includes for this model before selecting it at checkout.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the Riga V compare to the Riga XL?\u003c\/strong\u003e\u003cbr\u003eThe Riga XL is the largest model in the series at approximately 167 sq ft (8'4\" × 20') and is expandable. The Riga V is 165 sq ft (9'8\" × 17'6\") and is not expandable, but is wider — giving more usable width per row. The Riga V is typically less expensive than the Riga XL. Choose the Riga XL if you want expandability; choose the Riga V if you want maximum width in a fixed-length structure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does assembly take?\u003c\/strong\u003e\u003cbr\u003eAssembly takes approximately one full day for two people. Written instructions are included. No specialized tools are required, but having two people is strongly recommended for panel handling and frame alignment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the warranty on the Riga V?\u003c\/strong\u003e\u003cbr\u003eThe Riga V includes a 15-year warranty on the aluminum frame and a 10-year pro-rated warranty on the polycarbonate panels. These are among the strongest warranties available on residential greenhouse structures and reflect the quality of German manufacturing.\u003c\/p\u003e","brand":"Exaco","offers":[{"title":"No - Skip Foundation Frame \/ No Upgrade","offer_id":59734439428382,"sku":"RIGA-V","price":8999.0,"currency_code":"USD","in_stock":false},{"title":"No - Skip Foundation Frame \/ Add Premuim Upgrade","offer_id":59734439395614,"sku":"RIGA-V-UPG","price":11749.0,"currency_code":"USD","in_stock":false},{"title":"Yes \/ No Upgrade","offer_id":59517644439838,"sku":"RIGA-V-BASE","price":10748.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Add Premuim Upgrade","offer_id":59517644407070,"sku":"RIGA-V-UPG-BASE","price":13498.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/Riga_3.3.webp?v=1786470644"},{"product_id":"riga-4-black-9x14-greenhouse","title":"Riga 4 Black 9x14 Greenhouse","description":"\u003ch2\u003eRiga IV Black 9x14 Greenhouse — German-Engineered, Four-Season Growing\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eRiga IV Black\u003c\/strong\u003e (also called the Riga 4 Black) is a \u003cstrong\u003e135 sq ft, four-season greenhouse\u003c\/strong\u003e engineered and manufactured in Germany by Exaco — a company with 28 years of greenhouse manufacturing experience. It shares the same 9'8\" wide \"onion\" arch profile as the Riga III but extends to 14 feet in length, adding 33 sq ft of growing area and a second automatic roof opener for superior ventilation across the full interior.\u003c\/p\u003e\n\u003cp\u003eThe Black Series upgrade adds a \u003cstrong\u003eblack powder-coated aluminum frame\u003c\/strong\u003e, \u003cstrong\u003e6mm crystal-clear single-layer polycarbonate front\u003c\/strong\u003e, and \u003cstrong\u003eVictorian cast metal roof cresting\u003c\/strong\u003e — delivering refined European aesthetics without compromising structural performance. The Riga IV Black is rated to \u003cstrong\u003e100 mph winds\u003c\/strong\u003e, carries a \u003cstrong\u003e15-year frame warranty\u003c\/strong\u003e, and ships in \u003cstrong\u003e1–2 weeks\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShips in 1–2 weeks.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eWhat's Included — Basic Package\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e6mm crystal-clear single-layer polycarbonate — front gable and door\u003c\/li\u003e\n\u003cli\u003e8mm UV-coated translucent twin-wall polycarbonate panels — sides and roof\u003c\/li\u003e\n\u003cli\u003e10mm translucent twin-wall polycarbonate panels — rear gable (added strength)\u003c\/li\u003e\n\u003cli\u003e2 roof vents (22\" × 40\" each) with automatic openers\u003c\/li\u003e\n\u003cli\u003e1 rear wall window (3'5\" × 2'1\")\u003c\/li\u003e\n\u003cli\u003eSplit dutch hinged door with keyed lock\u003c\/li\u003e\n\u003cli\u003eFirst-class insulation — R\/K-value up to 1.89\u003c\/li\u003e\n\u003cli\u003e15-year warranty on aluminum frame\u003c\/li\u003e\n\u003cli\u003e10-year pro-rated warranty on polycarbonate panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuild Your Package — Available Add-Ons\u003c\/h3\u003e\n\u003cp\u003eConfigure your Riga IV Black using the options above. Each add-on ships in the same delivery:\u003c\/p\u003e\n\u003ctable style=\"width: 100%; height: 156.75px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 18.8319%; height: 39.1875px;\"\u003eOption\u003c\/th\u003e\n\u003cth style=\"width: 64.9634%; height: 39.1875px;\"\u003eWhat It Does\u003c\/th\u003e\n\u003cth style=\"width: 12.5442%; height: 39.1875px;\"\u003eAdded Cost\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 18.8319%; height: 39.1875px;\"\u003e\u003cstrong\u003eAnchor Option\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.9634%; height: 39.1875px;\"\u003eAnchoring hardware to secure the greenhouse to a concrete pad or foundation\u003c\/td\u003e\n\u003ctd style=\"width: 12.5442%; height: 39.1875px;\"\u003e+$99.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.375px;\"\u003e\n\u003ctd style=\"width: 18.8319%; height: 78.375px;\"\u003e\u003cstrong\u003eBase Kit (Foundation Frame)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.9634%; height: 78.375px;\"\u003e6\" H × 116\" W × 168\" D ground-installation frame; buried in trench and backfilled with soil to anchor the greenhouse and add interior height. Strongly recommended for soil\/lawn installations.\u003c\/td\u003e\n\u003ctd style=\"width: 12.5442%; height: 78.375px;\"\u003e+$1,499.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eRiga IV Black vs. Riga III — Key Differences\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eRiga IV Black (this model)\u003c\/th\u003e\n\u003cth\u003e\u003ca href=\"\/products\/riga-iii-9x10-greenhouse\"\u003eRiga III\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14'\u003c\/td\u003e\n\u003ctd\u003e10'6\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGrowing Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e135 sq ft\u003c\/td\u003e\n\u003ctd\u003e102 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRoof Windows\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 (with auto openers)\u003c\/td\u003e\n\u003ctd\u003e1 (with auto opener)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Kit Cost\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+$1,499\u003c\/td\u003e\n\u003ctd\u003e+$1,299.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStarting Price\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$7,289\u003c\/td\u003e\n\u003ctd\u003e$6,209\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMore growing length; 2-zone ventilation; larger harvests\u003c\/td\u003e\n\u003ctd\u003eCompact footprint; smaller gardens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe Riga IV Black and Riga III share the same 9'8\" width and 7'7\" peak height. The Riga IV adds 3'6\" of length, 33 sq ft of growing area, and a second automatic roof opener for improved ventilation across the longer interior.\u003c\/p\u003e\n\u003ch3\u003eRiga Series Comparison\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003cth\u003eArea\u003c\/th\u003e\n\u003cth\u003eRoof Windows\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IIs\u003c\/td\u003e\n\u003ctd\u003e7'4\"\u003c\/td\u003e\n\u003ctd\u003e7'\u003c\/td\u003e\n\u003ctd\u003e7'\u003c\/td\u003e\n\u003ctd\u003e~48 sq ft\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IIIs\u003c\/td\u003e\n\u003ctd\u003e7'8\"\u003c\/td\u003e\n\u003ctd\u003e10'6\"\u003c\/td\u003e\n\u003ctd\u003e7'1\"\u003c\/td\u003e\n\u003ctd\u003e81 sq ft\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga III\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003e10'6\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003e102 sq ft\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IVs\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003e13'10\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003e~130 sq ft\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRiga IV Black (this model)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e9'8\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e14'\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e7'7\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e135 sq ft\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e2\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga V\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003e17'6\"\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003e165 sq ft\u003c\/td\u003e\n\u003ctd\u003e2+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga XL series\u003c\/td\u003e\n\u003ctd\u003e9'8\"\u003c\/td\u003e\n\u003ctd\u003eUp to 30'+\u003c\/td\u003e\n\u003ctd\u003e7'7\"\u003c\/td\u003e\n\u003ctd\u003eUp to 300+ sq ft\u003c\/td\u003e\n\u003ctd\u003eMultiple\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the Riga IV Black greenhouse?\u003c\/strong\u003e\u003cbr\u003eThe Riga IV Black is a 135 sq ft, four-season polycarbonate greenhouse manufactured in Germany by Exaco. It features a black powder-coated aluminum frame, a crystal-clear 6mm polycarbonate front, and 8mm\/10mm twin-wall polycarbonate side and rear panels. It is rated to 100 mph winds and includes two automatic roof vents for year-round temperature regulation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the Riga IV have two roof windows instead of one?\u003c\/strong\u003e\u003cbr\u003eThe Riga IV's 14-foot length requires two roof windows to provide adequate ventilation across the full interior. A single roof window at one end would leave the far end of the greenhouse with insufficient airflow on hot days. The two automatic openers work independently, allowing the greenhouse to self-regulate temperature along its full length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Riga IV and the Riga IVs?\u003c\/strong\u003e\u003cbr\u003eThe Riga IVs is the shorter \"S\" variant of the Riga IV series. Both models share the same 9'8\" width and 7'7\" height. Contact us for the specific length and pricing of the Riga IVs if you are comparing the two models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need the base kit (foundation frame)?\u003c\/strong\u003e\u003cbr\u003eThe base kit is strongly recommended for soil or lawn installations. The Riga IV base kit is a 6\" H × 116\" W × 168\" D aluminum frame buried in a trench and backfilled with soil to anchor the greenhouse and raise the interior height by 6\". Without a proper foundation, the greenhouse may shift over time. If installing on an existing concrete pad, the anchor option (+$99.99) may be more appropriate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the Riga IV Black handle heavy snow loads?\u003c\/strong\u003e\u003cbr\u003eYes — the \"onion\" arch profile sheds snow automatically. The Riga IV has been tested against winds up to 100 mph and has never been blown away when properly anchored with the base kit or anchor option.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does assembly take?\u003c\/strong\u003e\u003cbr\u003eAssembly takes approximately one full day for two people. Written instructions are included. The Riga assembly facilitation kit (metric tape, 10mm wrenches, ratchet straps, Boss 399 silicone caulk, window restraint cables) is available separately and contains all the specialized tools needed for the build.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga IV Black expandable?\u003c\/strong\u003e\u003cbr\u003eNo — the Riga IV Black is a fixed-length model. If you anticipate needing more space in the future, consider the Riga XL series, which is designed to be expandable by adding additional sections.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat polycarbonate thickness does the Riga IV Black use?\u003c\/strong\u003e\u003cbr\u003eThe Riga IV Black uses three polycarbonate thicknesses: 6mm crystal-clear single-layer on the front and door for maximum light and visibility; 8mm UV-coated twin-wall on the sides and roof for insulation and durability; and 10mm twin-wall on the rear gable for added structural strength.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Riga IV Black suitable for year-round growing in cold climates?\u003c\/strong\u003e\u003cbr\u003eYes. The twin-wall polycarbonate panels provide an insulation R\/K-value of up to 1.89, and the \"onion\" arch profile sheds snow without accumulation. The greenhouse is engineered for four-season use in cold climates, including regions with heavy snowfall and sub-zero temperatures.\u003c\/p\u003e","brand":"Exaco","offers":[{"title":"No - Skip Foundation Frame \/ No Upgrade","offer_id":59770804338974,"sku":"RIGA-IV-BLACK","price":10999.0,"currency_code":"USD","in_stock":false},{"title":"No - Skip Foundation Frame \/ Add Premium Upgrade","offer_id":59770804371742,"sku":"RIGA-IV-BLACK-UPG","price":13349.0,"currency_code":"USD","in_stock":false},{"title":"Yes \/ No Upgrade","offer_id":59519101731102,"sku":"RIGA-IV-BLACK-BASE","price":12498.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Add Premium Upgrade","offer_id":59519101796638,"sku":"RIGA-IV-BLACK-UPG-BASE","price":14848.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/RigaBlack1.webp?v=1782582548"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/collections\/Riga_5.1.webp?v=1787360767","url":"https:\/\/rigagreenhousekit.com\/collections\/best-outdoor-greenhouse-for-winter.oembed","provider":"Riga Greenhouses","version":"1.0","type":"link"}