Headboard and footboard together stop a mattress from creeping in either direction, a small practical advantage of this full-size metal frame. Twelve dense slats form a ventilated platform that needs no box spring, and extra middle legs guard against sagging in the center. The 12-inch under-bed space handles bins and makes floor cleaning simple. Rounded corners reduce the chance of a bruised shin. Recommended for a 4 to 12 inch mattress. Overall 78 by 55.5 by 32 inches; 660-pound capacity, 43 pounds.