True HEPA replacement filter captures 95 percent of airborne particles as small as 2 microns to help you establish a cleaner breathing experience for you and those around you. Versatile design helps reduce unpleasant odors such as pet, cooking and smoke odors to keep rooms smelling fresh. Easy-to-install design allows quick, simple replacement to ensure optimal performance. Replacement filter is designed for compatible Honeywell, Vicks, and Holmes air purifiers (sold separately).