1.Clean & Fresh Air Quality | Replacement Filter for Germ Guardian Air Purifier models filters out dust, and odor to keep your house's air quality and clean for your family to breathe in 2.True HEPA Filtration | True HEPA air purifier performance catches up to 99.97% of particles as small as 0.3 microns in the air and traps it into its filter panels 3.Long Lasting Clean Air | This non-OEM HEPA Filter delivers as excellently as the OEM filter and generally lasts for 12 months before needing to be replaced so you can enjoy clean and filtered air all year round at a fraction of the price; compatible with Germ Guardian models AC5000, AC5000e, AC5250pt, AC5350b, AC5350bca, AC5350w, AC5300b, CDAP5500BAC, CDAP5500WSP, Pure Guardian Model AP2800CA 4.Easy Install & Replacement | This filter mounts to the slot of your air purifier; the carbon pre-filter fits on the front of the main filter as shown on the photo. Simply take out the old filter from the unit and replace it with the one for a fast and clean installation with no tools required