Blueair Blue Pure 411 411+ 411 Auto Genuine Replacement Filter Particle + Carbon

The Blue Pure 411 Particle and Activated Carbon Replacement Filter protects against both gaseous and particulate impure. An activated carbon mesh layer eliminates harmful gaseous pollutants such as volatile organic compounds (VOCs), tobacco smoke, and other smells. In addition, advanced polypropylene filter media removes particle pollutants down to 0.1 micron in size from your indoor air, such as pollen, dirt, and pet dander. Using a 360-degree air intake and up to 4 times the filter surface area than competing replacement filters, the Blue Pure 411 Particle and Activated Carbon Filter lasts longer, on average from 6 months to a year