Sturdy Support Support your mattress with the sturdiest bed frame design available. The unique wedgelock connectors become stronger as more weight is applied and can support virtually any practical weight. The center support bar is 2-1/2" wide and made from double rail angle iron. Side rails with protective end caps and cross arms are both 1-1/2" x 1-1/2". Powder coated in a stylish black matte. Adjustable Height Glides The six adjustable height glides allow fine tuned height matching and stabilizing, for a customized fit with your headboard and footboard. Extra wide construction offset to fit virtually all headboards. Easy Assembly The bed frame assembles easily in seconds with absolutely no tools. Assembled frame has deeply recessed legs that provide extra toe room to prevent foot injury. Lifetime U.S. Warranty Frame features a lifetime U.S. manufacturer's warranty against defects and workmanship. Available in Cal King, King, Queen, Full, and Twin configurations. Extra Long Rails The side rails of this bed frame are longer than those on a standard bed frame. The STRUCTURES bed frame is designed to be used with a headboard and footboard. A longer frame makes it easier to make the bed when a headboard and footboard are attached. The extra length gives you more space at the top and bottom of the mattress to tuck sheets, blankets and comforters down and out of sight. If you do not plan to attach a headboard and footboard to the bed frame, we suggest you purchase a frame with standard length side rails, such as the STRUCTURES Universal Bed Frame: http://amzn.to/2aKmQVR