Cisco ONS 15454 Hardware Installation Manual page 470

NTP-G274 Replace the Air Filter of the ONS 15454 M2 Shelf Assembly
Figure 289: Replacing the Air Filter
1 Air filter
Step 2
Extract the air filter from the shelf assembly as shown in the following figure.
Figure 290: Replacing the Air Filter
1 Air filter
Step 3 Separate the cable guides from the air filter as shown in the following figure.
Cisco ONS 15454 Hardware Installation Guide
440
Maintaining the ONS 15454 M12 (ANSI and ETSI), ONS 15454 M2 and ONS 15454 M6 Shelf
2 Screw
2 Filter grid