Blueair Pure 211i Max offers superior air purification for open-concept homes. Its HEPASilent technology eliminates 99.97% of airborne particles, providing real-time adjustments. It quickly cleans rooms, automatically detecting and removing pollutants like viruses, dust, and odors. Compact with 360-degree air intake, placement is flexible. RealTrack in-app filter monitoring also accurately tracks filter lifetime.