T4000 Clearance Requirements For Airflow And Hardware Maintenance; T4000 Router Physical Specifications; Figure 27: Chassis Dimensions And Clearance Requirements - Juniper T4000 Hardware Manual

T4000 Clearance Requirements for Airflow and Hardware Maintenance

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T4000 Router Physical Specifications

Copyright © 2018, Juniper Networks, Inc.
When planning the installation site, you need to allow sufficient clearance around the
rack (see Figure 27 on page
For the cooling system to function properly, the airflow around the chassis must be
unrestricted.
NOTE: If you mount the router in a cabinet, be sure that ventilation is
sufficient to prevent overheating.
For service personnel to remove and install hardware components, there must be
adequate space at the front and back of the router. At least 24 in. (61 cm) are required
both in front of and behind the router. NEBS GR-63 recommends that you allow at
least 30 in. (72.6 cm) behind the rack.

Figure 27: Chassis Dimensions and Clearance Requirements

30" (76.2 cm)
clearance recommended
for maintenance
Front of chassis
19.2"
(48.7 cm)
Front-mounting
flange
with rear cable managment system
T4000 Cooling System Description on page 25
Rack Requirements for the T4000 Router on page 93
T4000 Router Physical Specifications on page 91
Table 63 on page 92 lists the router's physical specifications.
Chapter 9: Planning and Preparing the Site
91):
31 "
(78.7 cm)
Center-mounting
2.4"
bracket
(6.1 cm)
19.8" (50.3 cm) width
30" (76.2 cm)
clearance recommended
for maintenance
(without rear cable
management system)
Rear of chassis
17.4"
(44.2 cm)
30" (76.2 cm)
clearance recommended
for maintenance
(with rear cable
9.5"
management system)
(24.1 cm)
depth for optional rear cable
managment system
91