Honeywell Enviracare 60000 Tower Air Purifier with IFD Filter Air purifier with built-in ionizer and permanent easy-to-clean IFD filter Whisper-quiet operation; AHAM clean-air delivery rate (CADR) of 100 2 air-cleaning levels for customized and efficient operation For medium-sized rooms up to 150 square feet; compact design Measures approximately 15-1/2 by 14-1/4 by 19-3/8 inches; 5-year limited warranty