Keep your air purifier operating at peak performance. Filter captures up to 99.97% of airborne particles and microscopic allergens. Replacement media must be used with pre-filer: HRF-AP1. For best performance, replace once each year
Filter Type: HEPA; Filtration For: Allergens; Dust; Mold Spores; Pet Dander; Pollen; Smoke; Air Cleaner Compatibility: Honeywell® HPA-Series Air Purifiers; Quantity: 3 per pack.