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 Twin, Full, Queen and King Size Beds This bedframe is adjustable and will fit Twin, Full, Queen, and King Size box spring and mattress units. Strong Sturdy Construction The side rails are constructed of oversized 1 3/4" x 1 3/8" steel for solid comfort. Keyslot Crossarms Make assembly / selecting the chosen size easy and they lock securely in place. Included Double Angle Center Support System Included Center Support system consists of 1 cross rail, running head to foot with 2 rug roller equipped feet. Total Number of Legs Six 2 1/4" Rug Roller equipped legs (including 2 on the center support rail). Two of the Rug Rollers are lock equipped. Bolt-On Headboard Brackets This bedframe provides bolt-on connections for the headboard. The brackets are of heavy duty riveted construction and will fit virtually all bolt-on style headboards and footboards. 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.