Austin Air FR400A Health-Mate Filter Air Purifier, Standard, 1 Black

STAGE 1 ? Large Particle Pre-filter. Removes particles easily seen by the naked eye (e.g. dust, hair and pet dander). STAGE 2 ? Medium Particle Pre-filter. Removes small to medium size particles (e.g. molds, spores and pollen). STAGE 3 ? Over 780 cubic inches of Activated Carbon and Zeolite. Removes chemicals, gases and odors. STAGE 4 ? 60 sq. ft. of True Medical Grade HEPA. Removes 99.97% of all particles larger than 0.3 microns and 95% of all particles larger than 0.1 microns.