{"title":"Riga Standard Greenhouses","description":"\u003cp\u003e\u003cspan\u003eRiga Greenhouses are designed, engineered, and manufactured in Germany , a leading manufacturer of commercial and hobby greenhouses. Riga Greenhouses come standard with 8mm polycarbonate on the roof and sidewalls and 10mm twin wall polycarbonate on the endwalls. It includes 1 roof vent, 1 large rear wall window, and 1 Dutch door. Riga greenhouse kit come standard a 15 year warranty on the frame, 10 years on the covering.\u003c\/span\u003e\u003c\/p\u003e","products":[{"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-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"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/collections\/riga-iv_1.webp?v=1782509018","url":"https:\/\/rigagreenhousekit.com\/collections\/riga-standard-series-greenhouses.oembed","provider":"Riga Greenhouses","version":"1.0","type":"link"}