Verify That The Site Meets The Requirements Described In "Site Preparation Checklist For Ex4300 Switches" On Page; Maintenance, And Secure It To The Building Structure; Read "General Safety Guidelines And Warnings" On Page 283, With Particular Attention To "Chassis Lifting Guidelines" On Page - Juniper EX4300 Hardware Manual

EX4300 Switch Hardware Guide
170
You can mount the switch on two posts of either a two-post rack or a four-post rack by
using the mounting brackets provided with the switch. See
on Two Posts of a Rack or Cabinet" on page
NOTE: If you need to mount the switch in a recessed position on either a
two-post rack or a four-post rack, you can use the 2-in.-recess front-mounting
brackets provided in the separately orderable four-post rack-mount kit.
NOTE:
To ensure that the protective earthing terminal is accessible through the
opening in the rear mounting-blade:
Ensure that the rack is 27.5 in. (70 cm) through 30.5 in. (77.5 cm) deep if
you are mounting the switch flush with the rack front on four posts of a
rack.
Ensure that the rack is 29.5 in. (75 cm) through 32.5 in. (82.5 cm) deep if
you will mount the switch 2 in. recessed from the rack front.
Before mounting the switch on four posts of a rack:
Verify that the site meets the requirements described in
for EX4300 Switches" on page
Place the rack in its permanent location, allowing adequate clearance for airflow and

maintenance, and secure it to the building structure.

Read "General Safety Guidelines and Warnings" on page
to "Chassis Lifting Guidelines" on page
Remove the switch from the shipping carton (see
page 161).
Ensure that you have the following parts and tools available:
Phillips (+) screwdriver, number 2 (not provided)
6 flat-head 4-40 Phillips mounting screws (provided with the four-post rack-mount
kit)
12 flat-head 4x6-mm Phillips mounting screws (provided with the four-post rack-mount
kit)
One pair each of flush or 2-in.-recess front-mounting brackets (provided with the
four-post rack-mount kit)
One pair of side mounting-rails (provided with the four-post rack-mount kit)
One pair of rear mounting-blades (provided with the four-post rack-mount kit)
Screws to secure the chassis and the rear mounting-blades to the rack (not provided)
Cover panels for uplink module and power supply slots (provided)
"Mounting an EX4300 Switch
167.
"Site Preparation Checklist
87.
283, with particular attention
292.
"Unpacking an EX4300 Switch" on
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