CHERRY UVC Air Purifier (AP-02) Replacement FilterFeatures: Pre Filter for large dust and human hair. HEPA filter for allergens, pollen, dust mites, tobacco smoke, and pet dander. Honey comb filter for benzene, toulene, formaldehyde, ammonia, and common odors. Photocatalysts filter for TVOC's (Total volatile organic compounds; such as natural gas), Chemical and Harmful gas Includes: 1 pc Replacement Filter Set Pre Filter HEPA Filter Honeycomb Filter Cold Catalyst Filter