{"title":"12X28 Greenhouse","description":null,"products":[{"product_id":"grandio-summit-12x28","title":"Grandio Summit 12x28 Greenhouse Kit","description":"\u003ch2\u003eGrandio Summit 12x28 Greenhouse Kit — Commercial Grade Growing\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGrandio Summit 12x28 Greenhouse Kit\u003c\/strong\u003e is a commercial-grade, heavy-duty greenhouse engineered for gardeners who need more room to grow. With a \u003cstrong\u003e9.25-foot peak height\u003c\/strong\u003e, \u003cstrong\u003e12-foot width\u003c\/strong\u003e, and \u003cstrong\u003e336 square feet of growing area, \u003c\/strong\u003ethe Summit 12x28 is one of the largest and most capable backyard greenhouses available, built to perform year-round in any climate.\u003c\/p\u003e\n\u003ch3\u003eWhat Makes the Grandio Summit 12x28 Stand Out?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty powder-coated aluminum frame\u003c\/strong\u003e — Grandio’s strongest frame, engineered to resist corrosion and withstand harsh weather\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10mm twin-wall polycarbonate panels\u003c\/strong\u003e — superior insulation and UV protection for optimal plant health in all seasons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e9.25-ft peak height\u003c\/strong\u003e — exceptional headroom for tall plants, trellises, hanging baskets, and comfortable working conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMassive smooth-gliding lockable sliding doors\u003c\/strong\u003e — easy access for wheelbarrows, equipment, and large harvests\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoof ventilation system\u003c\/strong\u003e — promotes healthy airflow and temperature regulation throughout the 336 sq ft interior\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in rain gutters\u003c\/strong\u003e — channels water away to protect your foundation and surrounding landscape\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSnow load kit included\u003c\/strong\u003e — rated for heavy snow, so your investment is protected through winter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarn-style design\u003c\/strong\u003e — bold aesthetics that complement any backyard or garden setting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho Is the Grandio Summit 12x28 For?\u003c\/h3\u003e\n\u003cp\u003eThe Summit 12x28 is built for dedicated home gardeners, market growers, and serious hobbyists who need a greenhouse that goes beyond the basics. With 336 square feet of growing space, it’s ideal for growing vegetables, flowers, herbs, and seedlings at scale. Or for anyone who wants room for potting benches, shelving, and equipment alongside their plants. If you’ve outgrown a smaller greenhouse or are starting big from day one, the Summit 12x28 is the right choice.\u003c\/p\u003e\n\u003ch3\u003eCustomize Your Summit 12x28 Greenhouse\u003c\/h3\u003e\n\u003cp\u003eChoose your \u003cstrong\u003eanchor option\u003c\/strong\u003e (wood, concrete, or dirt with base kit) and optionally add the \u003cstrong\u003ePremium Upgrade\u003c\/strong\u003e for enhanced features. You can also add a \u003cstrong\u003eback door transformation kit\u003c\/strong\u003e to replace the rear wall with a second entrance for maximum workflow flexibility.\u003c\/p\u003e\n\u003ch3\u003eGrandio Summit 12x28 Specifications at a Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFootprint:\u003c\/strong\u003e 12 ft × 28 ft (336 sq ft)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak Height:\u003c\/strong\u003e 9.25 ft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Heavy-duty powder-coated aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlazing:\u003c\/strong\u003e 10mm twin-wall polycarbonate panels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoors:\u003c\/strong\u003e Smooth-gliding lockable sliding doors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Snow load kit, rain gutters, roof ventilation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnchor Options:\u003c\/strong\u003e Wood, Concrete, or Dirt (with base kit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by Grandio’s long-term warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow difficult is the Grandio Summit 12x28 to assemble?\u003c\/strong\u003e\u003cbr\u003eThe Summit 12x28 is designed for DIY assembly with detailed step-by-step instructions and all necessary hardware included. Most customers complete assembly over a weekend with a helper.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Grandio Summit 12x28 suitable for year-round use?\u003c\/strong\u003e\u003cbr\u003eYes. The 10mm twin-wall polycarbonate provides excellent insulation, and the included snow load kit ensures the structure holds up through heavy winter conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the peak height of the Grandio Summit 12x28?\u003c\/strong\u003e\u003cbr\u003eThe Summit has a 9.25-foot peak height, providing ample headroom for tall plants, hanging baskets, and comfortable movement inside the greenhouse.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat anchor options are available for the Summit 12x28?\u003c\/strong\u003e\u003cbr\u003eYou can anchor the Summit to wood, concrete, or dirt. The dirt option includes a base kit ($1,499 added to price) for a secure ground-level installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the Summit 12x28 compare to the Summit 12x24?\u003c\/strong\u003e\u003cbr\u003eThe 12x28 offers 48 additional square feet of growing space (336 sq ft vs. 288 sq ft), making it the better choice for growers who need extra room for larger plant collections, additional shelving, or workspace inside the greenhouse.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the Grandio Summit 12x28 come with a warranty?\u003c\/strong\u003e\u003cbr\u003eYes, the Summit is backed by Grandio’s long-term warranty covering the frame and polycarbonate panels. See the warranty section below for full details.\u003c\/p\u003e","brand":"Grandio Greenhouses","offers":[{"title":"Wood \/ No Upgrade","offer_id":51883792761144,"sku":"SUMMIT-1228-W","price":8899.0,"currency_code":"USD","in_stock":true},{"title":"Wood \/ Add Premium Upgrade","offer_id":51883792859448,"sku":"SUMMIT-1228-UPG-W","price":8899.0,"currency_code":"USD","in_stock":true},{"title":"Concrete \/ No Upgrade","offer_id":51883792793912,"sku":"SUMMIT-1228-C","price":8899.0,"currency_code":"USD","in_stock":true},{"title":"Concrete \/ Add Premium Upgrade","offer_id":51883792892216,"sku":"SUMMIT-1228-UPG-C","price":8899.0,"currency_code":"USD","in_stock":true},{"title":"Dirt (Adds Base Kit $1499 \/ No Upgrade","offer_id":51883792826680,"sku":"SUMMIT-1228-D","price":10398.0,"currency_code":"USD","in_stock":true},{"title":"Dirt (Adds Base Kit $1499 \/ Add Premium Upgrade","offer_id":51883792924984,"sku":"SUMMIT-1228-UPG-D","price":10398.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/3770\/0664\/files\/Untitled-design-11_701ea691-2ab4-4485-b73b-0d3ea1988861.jpg?v=1775764479"}],"url":"https:\/\/grandiogreenhouses.com\/collections\/12x28-greenhouse.oembed","provider":"Grandio Greenhouse","version":"1.0","type":"link"}