1183900 Replacement Filter Compatible with Whirlpool Air Purifier APT30010M, APT40010R, APT42010M, APT50010M and APMT2001M, with 4 counts 817500 Activated Carbon Pre-filter

Compatible with Whirlpool air purifier models: APT30010M, APT40010R, APT42010M, APT50010M and APMT2001M | 1183900 Filter (2 pack): Filters out particles such as hair, pet dander, and dust | 817500 Pre-filter (4 pack): Compatible with Whirlpool APT30010M, APT40010R, APT42010M and APT50010M; filter out large things,bad smell in indoor air and helps prolong the True HEPA Filter life | Please replace the 1183900 filter once every 12 months and the 817500 carbon pre-filter every 3 months | Easy to replace and disposable, no tools required. Please replace regularly to keep your machine clean