Honeywell True HEPA Replacement Filters effectively capture up to 99.97% of airborne particles, from the air that passes through the filter. Smoke, dust, pollen, pet dander & mold spores are reduced, providing you cleaner & fresher air. Air Purifier Filter Type: HEPA; Filtration For: Allergens; Dust; Pet Hair / Dander; Pollen; Smoke; Spores; Air Cleaner Compatibility: HPA090 Series; HPA100 Series; HPA200 Series; HPA300 Series; Width: 6.75".