Strong and Durable Steel OUR STRONGER MATTRESS SUPPORT – “Strong” may be an understatement; this all-in-one foundation, made with heavy duty steel, can support up to 3000 lbs NO BOX SPRING NEEDED - Platform is engineered with heavy gauge steel wires that replace your box spring, allowing you to rest your latex, memory foam or spring mattress directly on top of the foundation UNDERBED STORAGE – Storage space under the frame provides valuable storage room for extra odds and ends; improved design features recessed legs for safety QUICK, TOOL-FREE ASSEMBLY - Shipped in one box and requires no tools for assembly; simply unfold and rest your mattress on top; twin and twin XL sizes support a maximum weight capacity of 1500 lbs, while all other sizes can support up to 3000 lbs Worry-free 5 year limited warranty included; mattress sold separately