True HEPA filter captures up to 99.97% of particles as small as 0.3 microns, including allergens, such as pollen, dust, pet dander, and smoke. AeraSafe antimicrobial treatment applied to the True HEPA filter inhibits the growth of odor and stain-causing microorganisms. Compatible with Fellowes AeraMax 190, 200 and DX55 Air Purifiers. With normal usage, it is recommended that you change your filter every 12 months to keep your air purifier running at peak performance. A filter change indicator on your Fellowes AeraMax Air Purifier conveniently notifies you when it's time to replace your True HEPA filter

1 HEPA filter per pack, 4 packs per case