Juniper Networks ERX Hardware 8 - Manual (Page 152)

ERX 8.0.x Hardware Guide
Figure 50: ERX Routers Installed in a Rack
Mechanical Requirements
Follow these mechanical requirements for your rack:
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.
134 Equipment Rack Requirements