The Beautyrest World Class Bed Frame - "One Size Fits All" Universal - Twin/Full/Queen/California King/Eastern King, 7.5" high, Center Support - 6 Legs with rollers and Glides. An extra heavy-duty bed frame strong enough to support all bedding. Made of heavy duty high carbon, recycled railroad rails with a water-based, lead-free finish. Unique Wedge Lock leg design becomes even stronger with use. Oversized side rails provide additional support. Permanently attached locking system. Solid rivet construction increases durability. Rounded corners provide safety and recessed legs offer additional toe room. Heavy-duty brackets. Easy to assemble, no tools required. Limited lifetime warranty.