4U E-Pro Series Wall Mount Cabinet Rack Enclosure - Color: Black Order is for the 4U Model | External Size: 21.25"W x 17.71"L x 8.9"H Detachable side panels, Top & bottom knockouts, cooling fan mounts for universal fans. Tinted glass door with lock and key, rubber feet, adjustable cage rails, cage nuts and screws 19" Rack Format, Material: SPCC Cold Rolled Steel, Black Powder Coat Paint Comply with ANSI/EIA RS-310-D, IEC60297-2, DIN41494; Part1; DIN41494; Part 7