Dial 3 in. H X 3 in. W White Plastic Fresh Air

A time release formula that controls unpleasant odors from algae and bacteria in evaporative coolers and neutralizes odor in cooler water to freshen the air. Not for potable (drinkable) water.
Fresh air cake can be divided 4 ways
Neutralizes odor in cooler water to freshen air
Not for Potable (Drinking) Water