3Com 3CB9E8 Quick Installation Manual page 14

14 Chassis Quick Installation Guide
Figure 8 Rack Types
Bolt the rack to the floor.
Brace the top of the rack against the wall.
Make certain that the rack is properly aligned and squared. Use a
framing tool to ensure that the rack is squared.
To help support the chassis while you install it in a rack, install the
mounting shelves that are shipped with your chassis.
If you install more than one chassis in a rack, install the bottom chassis
first. Make certain that there is sufficient space between the bottom
chassis and the top chassis to provide space for an optional cable
management device.
Position the rack-mount clips if you are going to use them for the
rack-mount installation.
If you install the chassis in Metric rack slots, install the clip nuts and
screws in the closed slots of the rack-mount flanges.
If you install the chassis in Telco rack slots, position the chassis and
then install the screws and rack-mount clips in the open slots.