Product Detail Replacement Filter for the Austin Air Healthmate Air Purifier 60 sq. ft. true HEPA medical filter medium for particulates, carbon/zeolite mix for odor/gas control Nearly 15 lbs solid activated carbon and zeolite mix for odor/gas control Removes volatile organic compounds such as formaldehyde, ammonias and odors Lasts 5 years before needing replacement; 5 year prorated guarantee under normal residential use . The "Austin Air Purifier Healthmate Standard Replacement Filter in Black" is best product for you. We recommended Austin Air Purifier Healthmate Standard Replacement Filter in Black