CAPTURES UP TO 99.97% OF AIRBORNE ALLERGENS & VIRUS-SIZE PARTICLES 0.3 microns and larger passing through the True HEPA filter, including viruses, bacteria, pet dander, pollen, mold spores, and other airborne impurities REDUCES PET & COOKING ODORS, VOCs, and other allergy triggers passing through the Alumina Oxide + Activated Carbon Bed Filter