Honeywell HRF-D1 Premium Universal Replacement HEPA Air Purifier FilterTrue HEPA captures 99.97% of airborne allergens from the air that passes through it. Easy to clean- simply vacuum a couple times a year.Honeywell HRF-D1 Premium Universal Replacement HEPA Air Purifier Filter Features;; Replacement air purifier filter; Captures 99.97% of dust, smoke, pollen, mold spores, pet dander and other particles as small as 0.3 microns; Fits Honeywell 10590 series, 17000 series, 50100 series, and 50101; Fits Eviracaire 10500 series and DV-10; Includes one HEPA filter and one filter gasket