Only 3w x 3d x 7h, but packs all the features of larger metered dispensers. Program desired spray at 15-, 30- or 45-minute intervals. Controls odors in rooms up to 4,000 cu. ft. (20 ft. x 20 ft. x 10 ft.) for 15 to 45 days (depending on the selected spray interval). Visual (LED) refill and battery replacement indicator. Operates up to two years on two C batteries (not included). Mounting tape and screws included. Manufacturer’s five-year warranty when used with TimeMist® Ultra Concentrated Refills (WTB332402TMCA), sold separately.