Drinkwell Pet Fountain Reservoir Plus (6"L X 6"W X 12"H)

More than doubles the capacity of your Drinkwell Pet Fountain.Adds more than 70 oz. of storage for a total of more than one gallon!Ideal for multiple cat households and dogs up to 50 lbs.Cuts down on refilling.Quickly and easily attaches to your Drinkwell Pet Fountain.