4U-High 18''-Deep 19''-Wide Wallmount Cabinet Enclosure Network Rack Locking Glass Door Outer dimensions: 17.7''D x 11''H x 23.6''W Fits Standard 19" rack-mount equipment. Inside usable space of 15.35'' front to back. No fans included. Only one 120mm venting slot available. Door is Tempered Glass. Removable side panels with locks. Comes fully assembled. Top and bottom brackets for cable and wire access. Cage Nut kit included for 2U.