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COMPATIBLE WITH BLUE PURE 311 AUTO: Blueair Combination Particle + Carbon Replacement Filter compatible with Blue Pure 311 Auto Air Purifier.FILTERS BUILT TO LAST: Using a 360-degree air intake and up to 4x the filter surface area the Genuine Blue Pure 311 Auto Particle and Activated Carbon Filter lasts on average 6 months to a year; optimizing air flow and performance over time.AUTOMATED FILTER REPLACEMENT: Subscribe & save up to 10% on auto-delivered filters when replacement is needed; We recommend replacing your filter about every 6 months when used 24 hours a day.REMOVES EVEN TINIEST AIRBORNE PARTICLES DOWN TO 0.1 MICRON: Particle filter removes airborne particles such as pollen, pet dander, bacteria, mold, viruses, and dust from your indoor environment*.TRAPS HOUSEHOLD ODORS: A layer of carbon mesh traps light household odors, smoke, chemicals, and volatile organic compounds (VOC).INDEPENDENTLY TESTED FOR PERFORMANCE & SAFETY, ZERO OZONE: AHAM Verifide for CADR; Ozone Safety Standards Certified by CARB; Zero Ozone Verified (<5 ppb) by Intertek Sustainability Program
