Surround Air MT-8400 5-in-1 Air Purifier with True HEPA, Germ-Killing UV Light and Carbon Filter Cleans the air in 5 ways, an air-cleaning technology for virtually every airborne indoor pollutant True HEPA air filter to capture dust &allergens such as pollen, ragweed, dust mites & mold spores Activated carbon filter to remove odors, chemical vapors & cigarette smoke with washable pre-filter Ultra-violet lamp destroys viruses, germs, mold and bacteria making it a complete air cleaner system Photo catalytic oxidation filter with powerful fan to neutralize odors, bacteria and VOC's