NEC EXPRESS800 - Manual (Page 44)

4-6 Installing the System Rack
If you are installing a multi-rack system you must remove adjacent side panels
of racks prior to installing the rack frame link kit.
Removing Rack Side Panels
To remove the rack side panels:
1. Remove the eight Phillips-head screws securing each side panel to the rack.
See Figure 4-3.
2. Lift the side panels out and away from the rack.
Figure 4-3. Removing the Side Panels.