The True HEPA Filter captures 99.97% of airborne particles as small as 0.3 microns, including pollen, ragweed and other allergens, viruses, germs, dust mites, mold spores and cigarette smoke. AeraSafe antimicrobial treatment provides built-in protection from the growth of odor causing bacteria, mildew and fungi on the True HEPA filter. 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. Color: Whites.