2 Pack 311 Auto Filters Replacement, Compatible with Blueair Blue Pure 311 Auto Air Purifier, 2 in 1 HEPASilent and Activated Carbon Filter

【PERFECT FIT】Compatible with Blueair Blue Pure 311 Auto air purifier. Attention: Not include with 311 (Non-auto)
【NOTE】Not compatible with Blue Pure 311, 311i Max, 311i+ Max, 211, 211+ Auto, 211i Max, 411, 411 Auto, 411i Max, 511, 511i Max, Mini Max air puri-fier
【True Air Filter】Our 311 Auto replacement filter made of 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 311 Auto Air Puri-fier, based on actual usage the filter should be replaced within 9 months
【SUPERIOR QUALITY】311 Auto 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