Replacement Filters for Air Purifiers: This filter replacement pack for tower air purifiers includes 1 PuriCare micro particle filter and 1 deodorizing activated carbon filter; Compatible with tower-style air purifier for home AS401WWA1 Powerful Activated Carbon Filter: The activated carbon filter absorbs and reduces odors and harmful gases in the environment; The filter protects against dust mite and eliminates even the minute particles in the air LG Filtration System: The LG filtration system works together diligently to clean the air by capturing particles like dust, pet dander, and pollen all while reducing odors; Smoke CADR: 140 / Dust CADR: 175 / Pollen CADR: 160 Long Lasting Filters for Home Air Purifiers: It is recommended to change the filter every 4100 hours of use, which is approximately 1 year; Get a lot of use out of these filters for air cleaner Buyer's Note: Do not discard the filter case that comes with your air purifier; These replacement filters do not include a new case