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

Perfect Fit: Compatible with Blueair Blue Pure 311 Auto air purifier. (Make sure the air purifier model is Blueair Blue Pure 311 Auto) NOTE: Not compatible with Blue Pure 311 (Non-auto), 311i Max, 311i+ Max, 211, 211+ Auto, 211i Max, 411, 411 Auto, 411i Max, 511, 511i Max, Mini Max air puri-fier Exclusively designed for Blueair Blue Pure 311 Auto air purifier replacement filter, It's rigorously tested for compatibility and service lifetime (The filter can last at least 5-6 months when used 24 hours a day，Replace every 6 months for optimal performance) 2 Layer System: HEPASilent filter captures 99. 97% of particles as small as 0. 1 μm such as pollen, dust and pet dander.. Activated Carbon Filter absorbs household odors from pets,smoking, cooking and harmful VOC's HEPASilent Technology: True HEPA Filter with H13 Grade, keep your air purifier working at its peak performance, that cause your 311 purifier to run easier and reduce your electricity bill Warranty: 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 Package Included: 2 Pack 311 Replacement Filters