Feature: Made of high quality material, durable to use Replacement HEPA filter for the original old and dirty one Effectively filter particles, bacteria, formaldehyde, smog, dust, fine powder, second-hand smoke, purify indoor air, prevent it from being polluted, and prevent secondary pollution Also can help to improve the filtering efficiency and performance of the air purifier, provide you with fresh air and healthy living environment Easy to remove and replace as part of routine maintenance Universal suitable for Febreze FRF 102B FHT170W FHT180W FHT190W air purifier