Replacement filter for cat fountain. Keep your cat s drinking water is fresh and . Helping you to take care of your cat s health. Features: Value pack of 10 filters. Size: 5in(outer diameter) 1.5in(inner diameter). Water quality can be removed by the filtration and assure the quality of the water and enhance the taste of freshwater for your cats. Rinse the filter with water thoroughly before using it easy to mount it on the pet water fountain. In order to ensure the water the filter should be replaced in time please replace them within 2 to 4 weeks. Any problem please our store without hesitation. Honor to serve you! Specification: Material: Inside Material: Filter sponge Package Size: 14.2 * 13.7 * 7cm / 6 * 5.4 * 2.8in Package Weight: 70g / 2.5oz Package List: 10* Cat water fountain filter