The listing, 3 Drinkwell Replacement Carbon Filters has ended.
3 Drinkwell Replacement Carbon Filters. I purchased the wrong ones so the package is opened, but they were never used. #1 Standard Carbon Filter PAC00-13067 for use with the Drinkwell Platinum Fountain, Original, Big Dog, Multi-Tier, Outdoor Dog, Mini, Everflow and Zen Pet Fountains Only.