Honeywell Compact AirGenius 4 Air Cleaner/Odor Reducer 4 Air Cleaning Levels: Sleep, General Clean, Allergen and Max, Dimensions:18.89 inches H x 7.75 inches W x 8.26 inches D Electronic Filter Check reminder light, Room Size Range: 100-300 sq. ft Automatic Shut-off Timer  2, 4,or 8 hours Quiet Operation with On/Off Oscillation To ensure stated product performance, use only Genuine Honeywell Replacement Filters.