The Ultimate 5-in-1 Bed Frame is hands down the strongest bed frame available. Nicknamed "The Monster" for its scary strength, this heavy-duty high-carbon rail track steel bed frame can support a tremendous amount of weight. The secret is in the frame's TWO inch hardened steel side rails. They literally double the strength of the frame! The Ultimate frame will adapt to any size of bedding (Twin, Full, Queen King, even California King). Includes a center support beam with 3 glides, creating superior rigid upright bed support.