Hunter 408841 True HEPA Tower Air Purifier True HEPA Filtration removes 99.97% of Airborne Particles down to 0.3 Microns UVC germicidal lamp reduces the presence of pathogens exposed to the UVC germicidal light Photo catalytic Oxidation reduces the amount of VOCs caused by household cleaners and products Oxygenating Catalyst helps reduce the presence of ozone, converting it to oxygen CADR: Smoke: 120 Dust: 105 Pollen: 115, Recommended Room Size: 186 sq. ft