The minimum size cabinet that can accommodate the device is 482 mm wide and 800 mm deep. A cabinet larger than the minimum requirement provides better airflow and reduces the chance of overheating. To accommodate a single device, the cabinet must be at least 13 U high. If you provide adequate cooling air and airflow clearance, you can stack eight devices in a cabinet that has at least 40 U (70 in. or 1.78 m) of usable vertical space.
The minimum front and rear clearance requirements depend on the mounting configuration you choose. The minimum total clearance inside the cabinet is 30.7 in. between the inside of the front door and the inside of the rear door.