2 Pack Blue Pure 411 Series AllergenBlock Filter Compatible with Blue Pure 411, 411+, 411 Auto Air Puri-fier, H13 True HEPA & Activated Carbon Filters

["【PERFECT FIT】411 Series AllergenBlock Filter ONLY Compatible with Blue Pure 411, 411+, 411 Auto air purifier","【NOTE】Not compatible with Blueair Blue Pure 411i Max/411a Max and other models","【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","【H13 True HEPA Air Filter】Our 411 Series replacement filter made of H13 true HEPA air filter and a high-efficiency activated carbon filter for good clean filtration and performance","【OPTIMAL PERFORMANCE MAINTENANCE】For the ongoing top performance of your Blue Pure 411 Series Air Puri-fier, based on actual usage the filter should be replaced within 9 months","【SUPERIOR QUALITY】411 Series 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)","【LIFETIME SERVICE】If you have any problems with the filter fitting your air purifier, please contact us through our Amazon home page, we will reply in 24 hours"]