True HEPA filter captures 99.97% of airborne particles as small as 0.3 microns, including pollen, ragweed & other allergens, viruses, germs, dust mites, mold spores & odors. AeraSafe antimicrobial treatment provides built-in protection from the growth of odor-causing bacteria, mildew & fungi on the filter. Compatible with AeraMax Air Purifiers. Filter Type: HEPA; Filtration For: Airborne Particles; Dust Mites; Germs; Mold Spores; Other Allergens; Pollen; Ragweed; Smoke; Viruses; Air Cleaner Compatibility: AeraMax 9286001; Width: 4.56".