Hunter 30526 HEPAtech Ultra-Quiet Air Purifier with 3-Speed Fan Air purifier designed for large rooms up to 19 by 21 feet CADR of 260 for smoke, dust, and pollen; 3-speed whisper-quiet fan HEPAtech filter; separately controlled ionizer; carbon prefilter Electronic controls; digital LCD screen; replacement filters included Measures approximately 17 by 10 by 25 inches; 5-year limited warranty