AprilAire 4112 Portable Air Purifier Pet Filter Hero Photo

AprilAire 4112 Replacement Pre-Filter for 9550 Room Air Purifier

Regular price $34.95


According to the EPA, indoor air is up to 5x more polluted than the air outside.

A pre-filter is an integral part of your AprilAire 9550 Portable Air Purifier. This Pre-Filter helps trap the medium to large airborne particles that flow through your unit. Without it, these larger airborne pollutants can clog up your other filters leading to inefficiencies and can even lead to an inoperable system.

Your Pre-Filter should be replaced every 6 months, at minimum, to keep your AprilAire Portable Room Air Purifier efficiently trapping dangerous particles in your air, like dust, pet dander, viruses, bacteria, and mold.

Maintain Healthy Air with your Portable Air Purifier Pre-Filter.


  • (1) 4112 Pre-Filter for 9550 Room Air Purifier


  • Compatible Models: AP09550A, AP09550C, AP09550P, AP09550V
  • Materials: Plastic
  • Actual Measurements: 20.31H x 14.69W x 0.67D (inches)