Front-To-Back Airflow; Back-To-Front Airflow; Figure 10: Front-To-Back Airflow Through The Ex3300 Switch Chassis - Juniper EX3300 Complete Hardware Manual

Table 14: Airflow Direction in EX3300 Switch Models (continued)
Model
EX3300-24T-DC
EX3300-48T
EX3300-48T-BF
EX3300-48P

Front-to-Back Airflow

Back-to-Front Airflow

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In front-to-back airflow models, the air intake is located on the front of the chassis. Cool
air is pulled into the chassis and pushed toward the rear of the chassis. Hot air exhausts
from the rear of the chassis. See

Figure 10: Front-to-Back Airflow Through the EX3300 Switch Chassis

Chassis front
Air intake
Fan
In back-to-front airflow models, the air intake is located on the rear of the chassis. Cool
air is pulled into the chassis and pushed toward the front of the chassis. Hot air exhausts
from the front of the chassis. See
Direction of Airflow
Front-to-back
Front-to-back
Back-to-front
Front-to-back
Figure 10 on page 23.
Air exhaust
Fan air
exhaust
Figure 11 on page 24.
Chapter 2: Component Descriptions
Air intake
Fan
Chassis rear
23