Powerful HEPA filter is 99% effective at reducing airborne particles such as dust, pollen, tobacco smoke, pet dander and mold spores. Plus, the ionizer delivers extra cleaning power and helps freshen the air. Odor-Lock Filter Technology helps remove common household odors while ProTec antimicrobial treated filter helps prevent mold growth on the filter. Three speeds. Recommended for small rooms. Air Cleaner Machine Type: HEPA; CADR: 70; Maximum Room Size (Square Footage): 80 sq. ft.; Maximum Room Size: 8 ft. x 10 ft.