The Airthereal AGH320 was designed as a bridge between two of our most successful models: the APH260 and the larger AGH380. With a CADR of 188 CFM, the AGH320 is perfect for large living rooms or other mid-sized areas. You will breathe easier with a Medical Grade H13 True HEPA Filter which removes 99.97% of fine particles down to 0.1 microns. You can also activate UV-C and anion functions to neutralize bacteria, viruses, and other pollutants during purification. With an ultra-quiet volume of 22 dB on the lowest fan speed and automatic adjustments to the fan speed based on real-time air quality levels, the Airthereal AGH320 is always looking out for you as it provides clean, fresh air in your home.