Features The bookcase headboard is sold separately Product Details Frame Material: Manufactured Wood; Composite Wood Box Spring Required: No Mattress Included: No Weight Capacity (Twin Size): 200 lb. Weight Capacity (Queen Size): 500 lb. Weight Capacity (Full Size): 500 lb. Weight Capacity (King Size): 500 lb. Adult Assembly Required: Yes Compatible with Adjustable Bed: No Recommended Mattress Thickness: 6''