Whynter EcoPure System Purifier Replacement HEPA & Activated Carbon Filter Air Purifers, Multi One 2 in 1 HEPA and activated carbon filter filer pack Hepa filter - designed to remove 99.97% Of all air pollutants that are as small as 0.3 Micrometers such as pollen, allergens and dust mites Activated carbon filter - eliminates and removes chemical fumes, toxic gases, smoke, pet and other odors For Whynter eco pure HEPA system air purifiers afr-425-pw and afr-425-sw