Juniper EX2300-C Hardware Manual page 87

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If you are mounting an EX2300 switch in a rack or cabinet with other equipment, or if
you are placing it on or under a desk or floor near other equipment, ensure that the
exhaust from other equipment does not blow into the intake vents of the chassis.
NOTE: You can mount only EX2300-C switches under a desk or other level
surface.
Leave at least 24 in. (61 cm) in front of the switch and 6 in. (15.2 cm) behind the switch.
For service personnel to remove and install hardware components, you must leave
adequate space at the front and back of the switch. NEBS GR-63 recommends that
you allow at least 30 in. (76.2 cm) in front of the rack or cabinet and 24 in. (61 cm)
behind the rack or cabinet.
Rack Requirements on page 59
Cabinet Requirements on page 60
General Site Guidelines on page 57
Rack-Mounting and Cabinet-Mounting Warnings on page 234
Cooling System and Airflow in an EX2300 Switch on page 23
Chapter 6: Preparation Overview
65