Style Name:Air Purifier Product Description Permanent IFDAir Purifier with filter that is washable and vacuum-able & never needs replacement! Amazon.com The HFD-120-Q offers these great benefits: The Honeywell QuietClean Tower Air Purifier features permanent filtration that effectively removes up to 99% of airborne allergens, 2 microns or larger. The HFD-120-Q captures up to 18 times more pollutants than ionic air purifiers and effectively circulates the air up to 5 times an hour! 3 cleaning levels ENERGY STAR rated Washable filters On/off oscillation control AHAM Certified Dust CADR: 100 Smoke CADR: 110 Pollen CADR: 132 Room Size: 17’x10′ (170 sq ft) The Honeywell True HEPA Allergen Remover circulates the air in a medium-sized room up to 5x an hour! The HFD-120-Q features both a permanent pre-filter and a HEPAClean filter that work together to remove up to 99% of airborne allergens. Exactly how small is 0.3 microns? Give your family clean, fresh air!