Purpose of a Bed Frame A bedframe does more than just raise your mattress off the floor. A bed frame fully supports your mattress and box spring without the assistance of a headboard and footboard. A bolt-on headboard may be attached to this bed frame, but such attachment is optional. Fits Three Different Standard Bed Sizes This one bed frame fits Queen, King, and California King size box spring and mattress sets. It can easily be changed to fit the needed size without mistakes or measuring. This support system has predetermined adjustment positions that fasten securely and require no tools for assembly. Strong Sturdy Construction The Side Rails are constructed of 1 1/4" x 1 1/4" steel. Keyslot Crossarms Make assembly / selecting the chosen size easy and lock securely in place. Locking Legs Creates a triple-thick steel layer at the corners for increased strength and rigidity. Included Center Support System Many mattress manufacturers require center support for their mattress in order for warranty requirements to be met. Center support systems prevent mattress sag. 1 3/4" Rug Saver Casters for Easy Mobility The 1 3/4" wide Rug Saver Casters provide easy mobility and help protect carpeting by distributing the weight of the bed over a larger area than standard casters. Bolt-On Headboard Connection This bed frame is designed for beds with a headboard that bolts on. The headboard brackets are of sturdy construction and fit virtually all headboards. Warranty This bedframe is warranted with a Limited Lifetime Warranty against defective materials or workmanship by the manufacturer. Made in the United States This bedframe is manufactured with pride in the United States (not an import nor aftermarket item). No corners are cut, no sacrifices in quality are made with either materials or the construction process of this bedframe.