Blueair Smokestop Filter for 400 Series Air Purifier
Blueair Air Purifier 400 Series SmokeStop Filter. HEPASilent filter of polypropylene (equal particle efficiency) with more activated carbon for better smoke and gas removal. Its honeycomb-type structure improves airflow and has hundreds of odor absorbing carbon pellets with three layers: a chipboard frame and outer layer, a pleated element, and a carbon element. SmokeStop filter is designed to treat cigarette smoke, acid gases, and ammonia. The filter uses a high content of granular carbon for increased efficiency, and its new carbon blend is designed to capture more compounds and gases to lower the pressure point. Fits 402, 403, 410, 450, 450E and 450ESS models. Genuine Blueair filter.