BlueAir SmokeStop Filter for 402

The optional SmokeStop filter kit provides your Blueair system with better protection from smoke and other airborne gases. This complete SmokeStop filter change kit fits the Blueair 402 HEPASilent Air Purifier and comes complete with: 1 enhanced HEPASilent filter of polypropylene (equal particle efficiency), with more activated carbon for better smoke and gas removal. Replace every 6 months.