This air purifier features a high CADR of 175 CFM and 360° air intake. It uses a 3-stage H13 True HEPA filtration system to capture 99.97% of airborne pollutants. Operating at a quiet 22 dB, it consumes only 25 watts of power on the highest speed. Price drops from $129.99 to just $29.99. Shipping is free with Amazon Prime or is otherwise a flat $6 per order.