Cisco 12410 Installation And Configuration Manual page 300

Cleaning or Replacing the Chassis Air Filter
Remove the air filter by pushing it up and out of the door
Step 2
Caution Be careful not to damage the honeycomb screens on the back of the air filter door
and in the fabric card cage. Damage to the honeycomb screens can restrict airflow,
cause overheating, and affect EMI performance.
Note
Figure 7-10 Removing the Chassis Air Filter
Cisco 12010, Cisco 12410, and Cisco 12810 Router Installation and Configuration Guide
7-18
Your air filter may have small tabs located on the top of the filter that you
can use to pull the air filter out of the door.
Chapter 7 Maintaining the Router
(Figure 7-10).
OL-11496-01