The AeraMax Pro 2 Standard Hybrid Filter is half HEPA and half Activated Carbon for enhanced air-cleaning power. The HEPA filter captures 99.97% of airborne particles including pollen, allergens, viruses, germs, dust mites, mold spores, pet dander and cigarette smoke. The Activated Carbon filter reduces odors and VOCs. Compatible with the AeraMax Pro 2 Air Purifier and provides one year filter life (depending on use).