Mechanical Requirements - Juniper ERX - RELEASE 11.1.X HARDWARE GUIDE 03-23-2010 Hardware Manual

ERX 11.1.x Hardware Guide
Figure 52: ERX Routers Installed in a Rack
ERX14xx model

Mechanical Requirements

Follow these mechanical requirements for your rack:
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Equipment Rack Requirements
ERX310 router
ERX7xx model
Plenum
Select from the following rack options:
Two-post rack A freestanding enclosed cabinet with two mounting posts
in the front
Telco-type rack Two adjacent mounting posts that you must secure to the
floor or an overhead structure
Four-post rack A freestanding open rack, either open or closed
The rack must have at least two mounting posts.
The distance between the mounting holes in the two posts must be 18.31 inches
±.063 inch, as specified in the EIA-310-D.
Do not use an enclosed rack for ERX7xx models or the ERX310 router. It does
not provide adequate ventilation.