50mm Hybrid Filter, contains 50% Carbon & 50% True HEPA, replacement filter for AeraMax Pro AM 3 and AM4 Air Purifiers, captures 99.97% of airborne particles, antimicrobial treatment, One-year estimated filter life, pack of 2. Combined filter that includes half True HEPA and half Activated Carbon in one for enhanced air-cleaning power. True HEPA filter captures 99.97% of airborne particles at the size 0.3 microns, including pollen, ragweed and other allergens, viruses, germs, dust mites, mould spores, pet dander and cigarette smoke The antimicrobial treatment provides built-in protection from odour growth, causing bacteria, mildew, and fungi on the HEPA filter. Commercial grade activated carbon filter which adsorbs a wide range of volatile organic compounds (VOCs) and odours. Includes separate pre-filter to capture larger particulate to help extend life of subsequent filters. Compatible with all variants of AeraMax Pro AM 3 and AM4 Air Purifiers. One-year estimated filter life (dep