MALOUF Structures Bolt-on Metal Bed Rail System with Center Support Bar and Adjustable Height Leg - Queen Size Metal bed rails with universal bolt-on headboard and footboard attachments Sturdy center support bar features adjustable height leg and glide foot Support leg height adjusts from 6.5 to 15.5 inches Connects to headboards and footboards to support box spring and mattress System consists of two 1.5" x 1.5" x 83" side rails with one adjustable center support bar; 3-year U.S. warranty