Hunter 30785 QuietFlo HEPA Tower Air Purifier with 3-Speed Fan Tower air purifier designed for rooms up to 17 by 18 feet CADR of 200 for smoke, 220 for dust, and 220 for pollen Quiet 3-speed fan; True HEPA filter; replaceable carbon prefilter Digital controls and LCD display; filter-change indicators Measures approximately 13 by 9 by 33 inches; 5-year limited warranty