Vented for additional cooling of large components. Fits all components up to 17-3/8 inches wide to quickly meet all of your rackmounting needs. Made from 16-gauge steel. Includes 3 rear bracket to prevent components from sliding backwards. Cable lacing slots at rear. Racking Height: 5 1/4 inches (3 space). Useable Shelf Area: 17.44W x 14 3/8 D inches. Capacity: 70 lbs.