Queen size metal bed frame fits standard twin size mattress. No box spring is needed with this solid steel black frame. 2-inch wide wooden birch laminated support slats evenly distribute the mattress for a restful nights sleep. Engineered with three extra support legs, for added stability, this bed frame can hold up to 600-pounds. The bed frame measures 13-inches high and offers extra underbed storage space. Easy to assemble. Bed frame ships directly to your door in one box. Bed frame dimension: 38-inches wide by 76-inches long by 13-inches high.