· Full-size bed frame provides support for your box spring and mattress· Made of durable steel with 9 legs (3 rows of 3) and a center bar for added support and stability· Simple lock-together system for easy assembly (no tools needed)· IMPRESSIVE WEIGHT CAPACITY: Twin size supports 350 lbs; Full, Queen, King & California King sizes hold up to 700 lbs total (350 lbs per person max for all sizes)· Box spring required (sold separately)