The AOS 2061 removes even the smallest particles from the air ensuring clean and healthy air at home or in the office. This Air Cleaner's special filter system efficiently reduces the levels of air pollutants such as pollen, dust, animal hair, mites, smoke and odors creating a room climate in which allergy sufferers, in particular, can take a deep breath. The 2 HEPA filters (High-Efficiency Particulate Air Filter) and the active carbon filter capture 99.97% of particles larger than 0.3 microns, ensuring a dramatic reduction in a room's pollutant content.