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When planning the site for installing an EX4300 switch, you must ensure sufficient clearance around the switch.

Follow these clearance requirements:

For the cooling system to function properly, the airflow around the chassis must be unrestricted. See Figure 38, Figure 39, and Figure 40 for reference.
Figure 38: Front-to-Back Airflow on 24-Port and 48-Port EX4300 Switches
Figure 39: Front-to-Back Airflow on 32-Port EX4300 Switches
Figure 40: Back-to-Front Airflow on 24-Port and 48-Port EX4300 Switches
If you are mounting the switch on a rack or cabinet along with other equipment, ensure that the exhaust from other equipment does not blow into the intake vents of the chassis.
Leave at least 6 in. (15.2 cm) clearance in front of and behind the chassis for airflow.
Leave at least 6 in. (15.2 cm) clearance on the left of the chassis for installing the grounding lug.
Leave at least 24 in. (61 cm) clearance in front of and behind the switch for service personnel to remove and install hardware components. See Figure 41.
Figure 41: Clearance Requirements for Airflow and Hardware Maintenance for an EX4300 Switch Chassis

Note: The 32-port EX4300 switches support fan modules and power supplies with the AIR OUT (AFO) label only.