【PERFECT FIT】The filter is ONLY compatible with Blueair Blue Pure 311i Max Air Purifier (F3MAX)
【NOTE】NOT compatible with Blue Pure 311, 311 Auto, 311i+ Max air puri-fier, please check the model number before placing your order
【AllergenBlock Design】Effectively traps more than 90% of AllergenBlock particles. In addition to efficient performance, it can also save up to 10% of automatic delivery filters and extend machine life
【2-STAGE FILTRATION】Our 311i max filter is designed in 2-in-1 Filtration. With air filter and high-efficiency activated carbon filter for good clean filtration and performance
【SUPERIOR QUALITY】311i Max replacement filter is made of high-quality non-woven activated carbon and can adsorb 99.99% of air particles (with a diameter as small as 0.03 micrometers)
