Kings Brand Furniture Black Metal Full Size Bed Headboard Footboard Rails & Metal Slats Black Metal Full Size Bed Headboard Footboard Rails & Metal Slats. This metal bed is made of metal tube and metal line with black coating, there is 5pcs slat to support your mattress and with 5pcs support legs The weight capacity of this bed is 400LBS. No need for a separate bed frame. Dimensions: 78.25"W x 58.5"D x 42"H. Height from the floor to flat is: 7.75"H. Inner size is of bed: 75.5"W*54"D. Simple assembly required.