SRX220 Services Gateway Cabinet Requirements

The SRX220 Services Gateway can be installed in a standard 800 mm (31.5 in.) or larger enclosed cabinet. Table 14 provides the details on cabinet size, clearance, and airflow requirements.

Table 14: SRX220 Services Gateway Cabinet Requirements

Cabinet Requirements


Cabinet size

19 in. (48.3 cm) as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D) published by the Electronics Industry Association (

You can mount the services gateway horizontally in the cabinet.

Clearance requirements

  • The cabinet is at least 1 U (1.75 in. or 4.5 cm) high.
  • The outer edges of the mounting brackets extend the width of the chassis to 19 in. (48.3 cm), and the front of the chassis extends approximately 0.5 in. (1.27 cm) beyond the mounting brackets.
  • The minimum total clearance inside the cabinet is 30.7 in. (78 cm) between the inside of the front door and the inside of the rear door.

Note: The holes for the mounting brackets are spaced 1.25 in. (3.2 cm) apart, measured from the center of the hole.

Cabinet airflow requirements

  • Ensure that ventilation through the cabinet is sufficient to prevent overheating.
  • Ensure adequate cool air supply to dissipate the thermal output of the device.
  • Install the device as close as possible to the front of the cabinet so that the cable management system clears the inside of the front door. Installing the chassis close to the front of the cabinet maximizes the clearance in the rear of the cabinet for critical airflow.
  • Route and dress all cables to minimize the blockage of airflow to and from the chassis.

Note: A cabinet larger than the minimum size required provides better airflow and reduces the chance of overheating.

Related Documentation