Juniper EX8208 Hardware Manual page 117

NOTE: To manage airflow in a hot-aisle--cold-aisle data center setup, you might want to use
the customized rack solution for EX8200 switches offered by Chatsworth Products, Inc.
Allow at least 6 in. (15.2 cm) of clearance on each side of the chassis. For the cooling system to function
properly, the airflow around the chassis must be unrestricted. See
Figure 30: Airflow Through the EX8208 Switch Chassis
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 24 in. (61 cm) both in front of and behind the switch. Allow at least 6 in. (15.2 cm) of
clearance on each side of the chassis. Leave adequate space at the front of the switch for service personnel
to remove and install hardware components. 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. See
Figure 31 on page 118.
Figure 30 on page 117.
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