Cisco ASR 9001 Hardware Installation Manual page 67

Unpacking and Installing the Chassis
Figure 41: Installing the Plenum Assembly in a Rack
Step 6 Attach the plenum assembly to the left and right rack rails using customer-supplied rack-mounting screws.
We recommend a minimum of four screws per side. These screws can vary in size and type depending on the
rack that you use. Torque the screws to the weight specified for your particular rack.
Step 7 Attach the rear adapter plates to the rear side of the plenum assembly. Fasten the rear adapter plates with M3
x 10mm screws, three on each side (see the figure below).
Cisco ASR 9001 and Cisco ASR 9001-S Routers Hardware Installation Guide
Installing the Air Plenum Kit
55