{"title":"Mattress Foundations","description":"","products":[{"product_id":"king-size-9-inch-metal-box-spring-with-fabric-cover-🛏️","title":"King Size 9-Inch Metal Box Spring with Fabric Cover","description":"\u003cdiv\u003e\u003cb\u003eReturned item.\u003c\/b\u003e\u003c\/div\u003e\u003cbr\u003e\u003ch1 style=\"color: rgb(30, 144, 255); text-align: center; font-size: 36px; margin-bottom: 20px;\"\u003eKing Size 9-Inch Metal Box Spring with Fabric Cover\u003c\/h1\u003e\u003cp style=\"margin: 10px 0px; color: rgb(51, 51, 51);\"\u003eElevate your sleep setup with this \u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eKing Size 9-Inch Metal Box Spring\u003c\/span\u003e, engineered for exceptional support, silent operation, and effortless assembly. Featuring a robust steel frame, premium fabric cover, and non-slip surface, this high-profile foundation is the ideal partner for your king mattress — delivering stability, comfort, and style night after night.\u003c\/p\u003e\u003cdiv class=\"section\" style=\"background-color: rgb(240, 248, 255); padding: 20px; border-radius: 10px; margin: 20px 0px; color: rgb(51, 51, 51);\"\u003e\n\u003ch2 style=\"color: rgb(0, 191, 255); font-size: 24px; border-bottom: 2px solid rgb(30, 144, 255); padding-bottom: 5px; margin-top: 30px;\"\u003eKey Features\u003c\/h2\u003e\n\u003cul style=\"margin-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eHeavy-Duty Steel Frame\u003c\/span\u003e - Provides rock-solid support for any king mattress type.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eCompletely Noise-Free\u003c\/span\u003e - Eliminates squeaks and creaks for peaceful, uninterrupted sleep.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003e9-Inch High Profile\u003c\/span\u003e - Perfect for shorter mattresses or those who prefer a taller bed height.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eEasy Tool-Included Assembly\u003c\/span\u003e - Sets up in minutes with all hardware and instructions provided.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eRemovable Fabric Cover\u003c\/span\u003e - High-quality, spot-cleanable cover for long-lasting freshness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eNon-Slip Top Surface\u003c\/span\u003e - Keeps your mattress securely in place without shifting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"section\" style=\"background-color: rgb(240, 248, 255); padding: 20px; border-radius: 10px; margin: 20px 0px; color: rgb(51, 51, 51);\"\u003e\n\u003ch2 style=\"color: rgb(0, 191, 255); font-size: 24px; border-bottom: 2px solid rgb(30, 144, 255); padding-bottom: 5px; margin-top: 30px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 1348px; border-collapse: collapse; margin: 20px 0px; background-color: rgb(255, 255, 255); box-shadow: rgba(0, 0, 0, 0.1) 0px 4px 8px;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid rgb(221, 221, 221); background-color: rgb(30, 144, 255); color: white;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid rgb(221, 221, 221); background-color: rgb(30, 144, 255); color: white;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: rgb(249, 249, 249);\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eKing (76\" x 80\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eHeight\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e9 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: rgb(249, 249, 249);\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003e43.4 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eHeavy-Duty Steel Frame with Premium Fabric Cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: rgb(249, 249, 249);\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eAssembly\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eTools \u0026amp; Instructions Included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eTop Surface\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid rgb(221, 221, 221);\"\u003eNon-Slip Fabric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\u003cdiv class=\"section\" style=\"background-color: rgb(240, 248, 255); padding: 20px; border-radius: 10px; margin: 20px 0px; color: rgb(51, 51, 51);\"\u003e\n\u003ch2 style=\"color: rgb(0, 191, 255); font-size: 24px; border-bottom: 2px solid rgb(30, 144, 255); padding-bottom: 5px; margin-top: 30px;\"\u003eCompatible Mattresses \u0026amp; Bed Frames\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; margin: 10px 0px;\"\u003eThis king size box spring is universally compatible with:\u003c\/p\u003e\n\u003cul style=\"margin-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cb\u003eAll King Size Mattresses\u003c\/b\u003e – Memory foam, innerspring, latex, hybrid, or pillow-top\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eStandard King Bed Frames\u003c\/b\u003e – Metal, wood, or upholstered (sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePlatform Beds with Center Support\u003c\/b\u003e – Must accommodate a 9-inch box spring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 16px; margin: 10px 0px;\"\u003e\u003cb\u003eImportant:\u003c\/b\u003e Confirm your bed frame has proper center support legs and is rated for use with a box spring. Not compatible with low-profile or slatted platforms without adequate support.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"section\" style=\"background-color: rgb(240, 248, 255); padding: 20px; border-radius: 10px; margin: 20px 0px; color: rgb(51, 51, 51);\"\u003e\n\u003ch2 style=\"color: rgb(0, 191, 255); font-size: 24px; border-bottom: 2px solid rgb(30, 144, 255); padding-bottom: 5px; margin-top: 30px;\"\u003eStep-by-Step Assembly Guide\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; margin: 10px 0px;\"\u003eAssemble your box spring in under 20 minutes — no experience needed:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cb\u003eUnbox Everything\u003c\/b\u003e: Lay out all frame pieces, slats, bolts, tools, and instructions on a clean floor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBuild the Frame\u003c\/b\u003e: Connect the side rails and crossbars using the included bolts and wrench — follow the numbered diagram.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInstall Support Slats\u003c\/b\u003e: Drop in the steel slats evenly across the frame and secure with provided clips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAttach Fabric Cover\u003c\/b\u003e: Slide the pre-stitched cover over the frame and zip or velcro it closed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePosition on Bed Frame\u003c\/b\u003e: Lift and center the box spring on your king bed frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAdd Your Mattress\u003c\/b\u003e: Place your king mattress on top — no slipping, no noise, just perfect support!\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\u003cdiv class=\"section\" style=\"background-color: rgb(240, 248, 255); padding: 20px; border-radius: 10px; margin: 20px 0px; color: rgb(51, 51, 51);\"\u003e\n\u003ch2 style=\"color: rgb(0, 191, 255); font-size: 24px; border-bottom: 2px solid rgb(30, 144, 255); padding-bottom: 5px; margin-top: 30px;\"\u003eWhy This Box Spring Stands Above the Rest\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; margin: 10px 0px;\"\u003eBuilt to last with \u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003eindustrial-grade steel\u003c\/span\u003e and a \u003cspan class=\"highlight\" style=\"color: rgb(30, 144, 255); font-weight: bold;\"\u003efully enclosed design\u003c\/span\u003e, this box spring eliminates weak points found in traditional wood foundations. The 9-inch height adds luxurious elevation, improves airflow under the mattress, and makes getting in and out of bed easier — especially for taller users or those with mobility needs. Plus, the removable cover keeps your sleep environment clean and allergen-free.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp style=\"margin: 10px 0px; color: rgb(51, 51, 51);\"\u003e\u003cb\u003eTransform your bedroom into a sanctuary of comfort and support — add this premium King Size 9-Inch Box Spring to your setup today!\u003c\/b\u003e\u003c\/p\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e ULIESC\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDepartment:\u003c\/strong\u003e Adults\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Box Spring Only\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShape:\u003c\/strong\u003e Rectangular\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eItem Height:\u003c\/strong\u003e 9 in\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrame Material:\u003c\/strong\u003e Metal\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e Easy Assembly, Non Slip, Noise Free\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRoom:\u003c\/strong\u003e Bedroom\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e Painted\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUpholstery Fabric:\u003c\/strong\u003e Fabric\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Mattress Size:\u003c\/strong\u003e King\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ULIESC","offers":[{"title":"Default Title","offer_id":42983325335670,"sku":"P4\/606\/1924P\/RNW1","price":132.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/4277\/6950\/files\/57_edb05f41-f0f3-4c82-8a24-84399e1e43ef.jpg?v=1768676398"}],"url":"https:\/\/sellizoe.com\/collections\/sellizo-furniture-beds-and-accessories-mattress-foundations.oembed","provider":"Sellizo","version":"1.0","type":"link"}