Honeywell HFD300 AirGenius3 AirCleaner/Odor Reducer, 250 sq ft Recommended for Large Rooms (225 sq. ft.) 3 air cleaning levels: Sleep, General Clean, Max Electronic Filter Check reminder light Filters and circulates Room Air 5X per hour when used in the recommended room size To ensure stated product performance, use only Genuine Honeywell Replacement Filters.