DESC: Purifier in a contemporary ultraslim design with a highefficiency fan that filters pollen tobacco smoke and odors, Quiet virtually silent low setting only 27 dB; energy efficient 16W output at low setting, Highperformance HEPAtype filter can last up to 2 years under normal operation conditions, 2 fan speeds; convenient auto shutoff timer 2 hours, Coverage area 126 sq ft 10x12.6 ft room; Purifier 16.5Lx16.5Wx5.3D