Cat Water Fountain Filters, 32 Pack Cat Fountain Replacement Filters for Stainless Steel 108oz/3.2L& 67oz/2L adjustable Water Flow Pet Water Fountain,Dog Water Fountain Filters（16 Filters& 16 Sponges)Compatibler: The cat fountain filter is compatible with a variety of cat fountains, please check the list of product pictures to make sure it is compatible with your cat fountain to avoid wrong purchase, thank you. Materialr: The filter is made of environmentally friendly materials, the filters cotton layer and activated carbon would keep the water quality of the water dispenser clean, so as to provide healthy and pure water and protect the pets