Classic Metered Air Freshener Dispenser, 4" X 3" X 9.5", White Automatically activates metered air freshener refill every 15, 30 or 75 minutes. Effective odor control for up to 30 days with Boardwalk® Air Freshener Refills (sold separately). Operates on two C batteries (not included). Discreetly masks odors automatically in any environment.