SRX300 Services Gateway Rack Size and Strength Requirements
When installing the services gateway in a rack, you must ensure that the rack complies with a 1U (19 in. or 48.7 cm) rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D), published by the Electronic Industries Alliance (http://www.ecaus.org/eia/site/index.html).
When selecting a rack, ensure that the physical characteristics of the rack comply with the following specifications:
The outer edges of the mounting brackets extend the width of either chassis to 19 in. (48.3 cm).
The front of the chassis extends approximately 0.5 in. (1.27 cm) beyond the mounting ears.
Maximum permissible ambient temperature when two devices are placed side by side in a 19 in. rack is 40° C.