Honeywell True HEPA Replacement Filter HRF-R2 - 2 Pack CERTIFIED HEPA FILTER FOR HONEYWELL AIR PURIFIERS: Our Filter R HEPA filters help capture up to 99.97% of airborne particles as small as 0.3 micron & are compatible with HPA090, HPA100, HPA200 & HPA300 series. Replace filters yearly for best performance HONEYWELL AIR PURIFIER FILTERS: To keep your Honeywell Air Purifier performing at it's best, so the air in your home is fresher and cleaner, change your air purifier's filters yearly. For best results, choose Honeywell replacement air purifier filters FILTER AND CIRCULATE AIR 5 TIMES AN HOUR: Honeywell Air Purifiers filter and circulate air in the stated room size up to 5 times an hour, so you can relax and breathe easy, knowing the air in your home is fresher, cleaner, and contains fewer allergens HONEYWELL AIR PURIFIERS: Use Certified HEPA filters in air purifier to help remove allergens, dust and airborne germs. If you have allergies or pets, air purifiers do more than freshen air, helping remove airborne particles and improve air quality HONEYWELL QUALITY: Use only Certified HEPA Honeywell Replacement filters with your Honeywell Air Purifier for best performance. Each air purifier's performance is tested as a system with the filters to ensure best efficiency