Cisco 12416 Installation And Configuration Manual page 315

Chapter 7 Maintaining the Router
Lift up the air filter and carefully slide it out of the door
Step 2
Be careful not to damage the honeycomb screens on the back of the
Caution
air filter door and in the fabric card cage. Damage to the honeycomb
screens can restrict airflow, cause overheating, and affect EMI
performance.
Figure 7-15 Removing the Chassis Air Filter
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
Cleaning or Replacing the Chassis Air Filter
(Figure 7-11).
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