HEPASilent particle filter for Blueair 200 series air purifier including:

• 201, 203, 205, 250E, 270E, 303

Blueair 200/300 Series Air Purifier Carbon SmokeStop Filter removes dust, pollen, bacteria, pet dander, mold spores and other airborne particles as well as gaseous pollutants such as Cigarette smoke or VOCs (Volatile Organic Compounds). The particle filter is made of polypropylene with more activated carbon for better smoke and gas removal, which mechanically filters out airborne particles. To maximize filter effectiveness, particles are negatively charged before reaching the filters. The system uses ion technology and produces no ozone emissions.  Measures 18.75 x 14.75 x 2.25 inches. Genuine Blueair filter