{"product_id":"foundation-frame-for-riga-iv","title":"Foundation Frame for Riga IV","description":"\u003ch2\u003e\u003cstrong\u003eFoundation Frame for Riga IV Greenhouse\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eRiga IV Foundation Frame\u003c\/strong\u003e is the purpose-built ground installation solution for the Riga IV greenhouse. Buried in a trench and backfilled with soil, it securely anchors the greenhouse directly to the ground without requiring a concrete foundation, while also raising the greenhouse height for additional headroom and growing space.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003e*Free shipping only when purchased together with a Riga greenhouse. Ordered separately, an additional shipping charge applies.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned specifically for the Riga IV greenhouse model\u003c\/li\u003e\n\u003cli\u003eBuried in-ground installation — no concrete required\u003c\/li\u003e\n\u003cli\u003eBackfilled with soil to securely anchor the greenhouse\u003c\/li\u003e\n\u003cli\u003eRaises the greenhouse height — adds headroom and growing space\u003c\/li\u003e\n\u003cli\u003ePurpose-built Riga accessory — engineered to fit the Riga IV footprint exactly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRiga IV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBuried in trench, backfilled with soil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFoundation Required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo concrete — installs directly into ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBenefit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSecures greenhouse to ground; adds height for headroom and growing space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRIGA-IV-BASE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrice\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$1,499\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree when purchased with a Riga greenhouse; additional charge when ordered separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow the Foundation Frame Works\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDig a trench around the perimeter of your greenhouse site to the required depth\u003c\/li\u003e\n\u003cli\u003ePosition the foundation frame in the trench at the correct level\u003c\/li\u003e\n\u003cli\u003eBackfill the trench with soil and compact to secure the frame\u003c\/li\u003e\n\u003cli\u003eAttach the Riga IV greenhouse structure to the foundation frame\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThis method provides a secure, stable anchor without the cost or permanence of a concrete foundation. The raised frame height also gives you additional interior headroom and growing depth compared to a ground-level installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Foundation Frame Do You Need?\u003c\/h3\u003e\n\u003cp\u003eRiga foundation frames are model-specific — order the frame that matches your exact greenhouse model:\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eFoundation Frame\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IIs\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/foundation-frame-for-riga-iis\"\u003eRiga IIs Foundation Frame\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e$824\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IIIs\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/foundation-frame-for-riga-iiis\"\u003eRiga IIIs Foundation Frame\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e$1,049\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga III\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/foundation-frame-for-riga-iii\"\u003eRiga III Foundation Frame\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e$1,299\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiga IV\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThis frame\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e$1,499\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eIf you are unsure which model you have, check your greenhouse documentation or contact us with your model number before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Riga IV and Riga IVs foundation frames?\u003c\/strong\u003e\u003cbr\u003eThe Riga IV foundation frame ($1,499) is engineered for the standard Riga IV. If you have the smaller \"S\" variant (Riga IVs), a different model-specific frame may be required. Contact us with your exact model number to confirm the correct frame before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the foundation frame required for the Riga IV?\u003c\/strong\u003e\u003cbr\u003eA proper foundation is strongly recommended for structural integrity, stability, and warranty compliance. The foundation frame is the recommended solution for soil or lawn installations. If you are installing on an existing concrete pad, you may not need this frame — contact us to confirm the right foundation approach for your site.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the foundation frame add headroom inside the greenhouse?\u003c\/strong\u003e\u003cbr\u003eYes — because the frame raises the greenhouse above ground level, you gain additional interior height compared to a ground-level installation. This is a meaningful benefit for tall growers or for hanging baskets and vertical growing setups.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow deep does the trench need to be?\u003c\/strong\u003e\u003cbr\u003eThe required trench depth depends on your local frost line and soil conditions. Refer to your Riga IV installation instructions or contact us for the recommended trench depth for your climate zone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I install the foundation frame myself?\u003c\/strong\u003e\u003cbr\u003eYes — the installation process (dig trench, position frame, backfill, attach greenhouse) is designed for DIY completion. Having two people is recommended for frame positioning and alignment. Refer to your Riga IV installation instructions for specific guidance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is free shipping only available when purchased with a greenhouse?\u003c\/strong\u003e\u003cbr\u003eThe foundation frame ships free when ordered together with a Riga IV greenhouse because it can be included in the same freight shipment. When ordered separately, it ships as a standalone item and an additional shipping charge applies due to its size and weight.\u003c\/p\u003e","brand":"Exaco","offers":[{"title":"Default Title","offer_id":59517644144926,"sku":"RIGA-IV-BASE","price":1499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/Riga_Base_Foundation_3.webp?v=1786480930","url":"https:\/\/rigagreenhousekit.com\/products\/foundation-frame-for-riga-iv","provider":"Riga Greenhouses","version":"1.0","type":"link"}