Homedics TotalClean Air Purifier Replacement Filter COMPATIBLE WITH: The long-lasting HoMedics TotalClean Replacement filter is designed to be used with the True HEPA Air Purifier AF-20 or AF-25. For best results use in a medium room up to 184 square feet. The filter is 12 x 1.25 x 13.5 inches. BREATHE CLEANER AIR: The HEPA filter removes 99.97% of airborne contaminants like allergens, pollen, smoke, pet dander, mold spores and germs. This filter is crafted to create a healthier home by preventing harmful particles from circulating in the air. REDUCES ODOR: This carbon odor filter captures large particles and gives cleaner air for the whole family and significantly reduces household odors. Running the purifier in any room will create better filtration and noticeably fresher air. EASY REPLACEMENT: This easy-clean filter is packaged individually and is a quick and simple replacement for the HoMedics True HEPA Air Purifier. It will last up to 18 months with optimal performance perfect for any home. IN-HOME WELLNESS: The HoMedics TotalClean filter is part of a full line of in-home wellness products that are uniquely designed to promote your well being; including: Air Filters, humidifiers, sleep aids, fitness monitors, and more.