Cisco NCS 5500 Series Hardware Installation Manual page 57

Install the Chassis
(Optional) Install Air Filter, Cable Management Bracket, or Door Kit on a Chassis
Figure 20: Attach Side Filter Assembly or Cable Management Brackets to NCS 5504 Chassis
For NCS 5508: Ensure that the 5 screw holes in the assembly align with the screw holes in five standoffs on the
mounting bracket.
Hardware Installation Guide for Cisco NCS 5500 Series Modular Routers
51