Product Detail Replacement Filter for the Austin Air HEGA Junior Air Purifier HEPA particulate (small particle) filtration as well as gases, odors and or smoke problems 30 sq. ft. true HEPA medical filter medium with strategically placed military carbon cloth Good for medium particulate allergies, smoke or city pollutants that produce odors, gases or soot Lasts 5 years before needing replacement; 5 year prorated guarantee under normal residential use . The "Austin Air HEGA Junior Replacement Filter in Black" is best product for you. We recommended Austin Air HEGA Junior Replacement Filter in Black