Not sure which Filtrete device or filter to buy? CLICK HERE to view our help guide.Click below to view F1 replacement filters for this device:1. Filtrete by 3M Advanced Allergen, Bacteria, and Virus True HEPA air Purifier Filter – F1 Size2. Filtrete by 3M Allergen Reduction + Odor Reduction HEPA-Type Air Purifier Filter – F1 Size3. Filtrete by 3M Allergen Reduction HEPA-Type Air Purifier Filter – F1 SizeHelp improve your indoor air quality with the Filtrete™ Room Air Purifier. Great for large rooms, this stand alone unit comes with the Filtrete™ Advanced Allergen, Bacteria Virus True HEPA Filter for our best capturing power. The True HEPA Filter captures 99.97% of airborne particles from the air passing through the filter media*. (*Disclaimer: as small as 0.3 microns, from the air passing through the filter media. Initial efficiency value.)