This filter set is a Single Pack. Compatible with HoMedics Air Purifiers AF-10FL AF-10 AP-15 fits AR-10 AF-75 AR-75 AT-75 AR10 AR75 AT75 HEPA filters can remove large and airborne particles, including dust, pet dander, common pollutants, and fabric fibers. Reduces unpleasant household odors and tobacco smoke. Please replace your filter regularly to keep your machine fresh and clean. NEW