{"product_id":"heavy-duty-box-spring-foundation-5-7-9-inch-fabric-cover-twin-full-king","title":"Heavy Duty Box Spring Foundation | 5\", 7\" \u0026 9\" High Metal Frame with Fabric Cover, Easy Assembly – Twin, Full, King","description":"\u003ch2\u003eHeavy Duty Support, Smooth Finish — Box Spring Foundation with Fabric Cover\u003c\/h2\u003e\u003cp\u003eThe Nuvia Haven Heavy Duty Box Spring Foundation delivers the firm, reliable support your mattress needs, wrapped in a clean fabric cover for a polished, finished look. Available in 5\", 7\", and 9\" heights and three sizes — Twin, Full, and King — this high metal frame foundation handles heavy loads with ease and assembles quickly without special tools. A practical, long-lasting upgrade for any bedroom setup.\u003c\/p\u003e\u003ch2\u003eWhy You'll Love It\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e🔧 \u003cstrong\u003eHeavy Duty Metal Frame\u003c\/strong\u003e – Engineered for maximum weight capacity and long-term durability, providing firm, even support across the entire mattress surface\u003c\/li\u003e\n\u003cli\u003e🧵 \u003cstrong\u003eSmooth Fabric Cover\u003c\/strong\u003e – Wrapped in a clean fabric exterior for a neat, finished appearance — no exposed metal bars or rough edges\u003c\/li\u003e\n\u003cli\u003e📏 \u003cstrong\u003e3 Height Options\u003c\/strong\u003e – Choose 5\" for a low modern profile, 7\" for a classic mid-height, or 9\" for maximum under-bed storage clearance\u003c\/li\u003e\n\u003cli\u003e🛏️ \u003cstrong\u003eUniversal Mattress Compatibility\u003c\/strong\u003e – Works with memory foam, innerspring, hybrid, and latex mattresses\u003c\/li\u003e\n\u003cli\u003e🛠️ \u003cstrong\u003eEasy Assembly\u003c\/strong\u003e – Designed for fast, straightforward setup that saves time and effort\u003c\/li\u003e\n\u003cli\u003e🏠 \u003cstrong\u003e3 Sizes Available\u003c\/strong\u003e – Twin, Full, and King to fit standard bed frames\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight Options\u003c\/td\u003e\n\u003ctd\u003e5 inches, 7 inches, 9 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003eTwin, Full, King\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Material\u003c\/td\u003e\n\u003ctd\u003eHigh-strength metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCover\u003c\/td\u003e\n\u003ctd\u003eSmooth fabric exterior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport Type\u003c\/td\u003e\n\u003ctd\u003eHeavy duty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMattress Compatibility\u003c\/td\u003e\n\u003ctd\u003eMemory foam, innerspring, hybrid, latex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eEasy, no special tools required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What makes this \"heavy duty\" compared to a standard box spring?\u003c\/strong\u003e\u003cbr\u003eA: This foundation uses a reinforced high-strength metal frame specifically designed for heavier loads and extended daily use, providing superior support and longevity compared to standard wire-grid box springs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the fabric cover for?\u003c\/strong\u003e\u003cbr\u003eA: The fabric cover wraps the entire foundation, giving it a clean, smooth appearance when visible beneath your mattress — ideal if you use a low-clearance bed frame or no frame at all.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which height should I choose?\u003c\/strong\u003e\u003cbr\u003eA: The 5\" option is compact and ideal for taller bed frames. The 7\" provides a classic, balanced bed height. Choose 9\" for maximum under-bed storage or a grand, elevated appearance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this compatible with a memory foam mattress?\u003c\/strong\u003e\u003cbr\u003eA: Yes — the firm, flat metal surface provides excellent support for memory foam, innerspring, hybrid, and latex mattresses.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How difficult is the assembly?\u003c\/strong\u003e\u003cbr\u003eA: Assembly is designed to be quick and easy. Most customers complete setup in under 30 minutes without special tools, following the included instructions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this come in Queen size?\u003c\/strong\u003e\u003cbr\u003eA: This model is available in Twin, Full, and King. For a Queen size box spring, please see our other foundation options in the store.\u003c\/p\u003e\u003ch2\u003eFast US Shipping\u003c\/h2\u003e\u003cp\u003eShips from US warehouse, free delivery 2-7 business days.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Twin \/ 7inch","offer_id":54252443107696,"sku":null,"price":40.72,"currency_code":"USD","in_stock":true},{"title":"Twin \/ 9inch","offer_id":54252443140464,"sku":null,"price":46.05,"currency_code":"USD","in_stock":true},{"title":"Full \/ 9inch","offer_id":54252443173232,"sku":null,"price":67.57,"currency_code":"USD","in_stock":true},{"title":"King \/ 9inch","offer_id":54252443206000,"sku":null,"price":71.19,"currency_code":"USD","in_stock":true},{"title":"Twin \/ 5inch","offer_id":54252443238768,"sku":null,"price":39.76,"currency_code":"USD","in_stock":true},{"title":"Full \/ 5inch","offer_id":54252443271536,"sku":null,"price":64.95,"currency_code":"USD","in_stock":true},{"title":"King \/ 5inch","offer_id":54252443304304,"sku":null,"price":77.05,"currency_code":"USD","in_stock":true},{"title":"Full \/ 7inch","offer_id":54252443337072,"sku":null,"price":73.79,"currency_code":"USD","in_stock":true},{"title":"King \/ 7inch","offer_id":54252443369840,"sku":null,"price":100.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0976\/3146\/9936\/files\/effa2614-30ce-4258-a33e-e6833ef08c61.jpg?v=1788263696","url":"https:\/\/nuviahavens.com\/products\/heavy-duty-box-spring-foundation-5-7-9-inch-fabric-cover-twin-full-king","provider":"Nuvia Haven","version":"1.0","type":"link"}