Pure Air Doctor's newest addition: The Intellipure Compact air purifier utilizes the same advanced, award winning and patented DFS technology used in the Intellipure Ultrafine 468. The simple, stylish design compliments any bedroom or small living space decor. It is ultra-quiet and has been specially designed to deal with ultrafine particles and medium to high gas and odor adsorption. The heavy duty, 5-stage gas and odor filter is the most effective filter in it’s class. Best if used in spaces below 500 sq. feet.