Our 211i Max replacement filter is fully compatible with the Blueair Blue Pure 211i Max Air Purifier. Replacement filter for 211i Max is designed for optimal performance, and works as the original ATTENTION: Please note that this filter is NOT compatible with 211+ and 211+ Auto Air Purifier, only for Blue Pure 211i Max Air Purifier This filter replacement for Blueair adopts a 2-in-1 HEPA Filtration System, which includes a HEPA Filter and a High-Efficiency Activated Carbon Filter, works for attaching 99.97% of airborne particles 0.3 microns in size, and automatically improves indoor air quality. The HEPA filter for the Blueair 211i Max can achieve a better purification effect than traditional ones. Our 211i max HEPA Filter can help attach 99.97% of the airborne particles as small as 0.3 microns, such as dust, hair, dander, and lint. The Activated Carbon filter solves the problem of unpleasant odors and gases, including cooking smells, smoke, and wildfire gases
