Replacement Air Filter Cartridge for Dukane & Hitachi Projectors - MU06641 - 456-8958H-RJ, Imagepro 8959H-RJ, Imagepro 8959H-RJ, Imagepro 8957HW-RJ, Imagepro 8958H-RJ, CP-WX4021, CP-WX4021N, CP-WX4021NJ, CP-X4020, CP-X4021, CP-X4021N, CP-X4021NJ, CP-X5021, CP-X5021N, DT01051, DT01171, HCP-4060X, and HCP-5000X Easy Installation: Replacing the air filter is straightforward, making it a convenient task during regular maintenance or lamp replacement