Frames are craftsman-built in America using cross-directional hardwood laminate certified by the Sustainable Forestry Initiative. Our Performance Fabrics are easy to clean, soft, and durable. Upholstered frames contain dense, fire-retardant foam to create a luxurious, plush backdrop. Box spring not required. Frames include space to accommodate variances in mattress sizes and allow bedding to be tucked in. Queen Bed weighs 285 lbs.; inner frame cavity measures 62.5 w x 80.5 d x 1.75 h. King Bed weighs 305 lbs.; inner frame cavity measures 78.5 w x 80.5 d x 1.75 h. Weight limit is 600 lbs. Clearance under bed is 1.