Part True HEPA filter, part carbon filter for enhanced air filtration performance. The True HEPA filter removes 99.97% (at 0.3 microns) of airborne particles: viruses, bacteria and other pathogens, pollen, ragweed, dust mites, mould spores, animal hair and other allergens, cigarette smoke. The True HEPA filter is antimicrobially treated, which effectively reduces the growth of bacteria and fungi on the filter and prevents the formation of unpleasant odours. The carbon filter traps unpleasant odours and volatile organic compounds. Compatible with the AeraMax™ Pro AM II air purifier. One year life (depending on use).