Captures 99.97% of particles and impurities as small as 0.3 microns, including mold spores, pollen, dust mites, most airborne microbes, allergens and cigarette smoke. Filter Type: HEPA; Filtration For: Airborne Microbes; Dust; Mold Spores; Pollen; Smoke; Air Cleaner Compatibility: Fellowes™ AP-300PH; Width: 12.7".