Replacement filter for cat fountain. Keep your cat's drinking water is , clean and safe. Helping you to take care of your cat's health.Compatible with for cat water fountain.Activated carbon cotton can remove residual chlorine, impurities and pollutants, keep the water and clean.Filtration can assure the quality of the water and enhance the taste of freshwater for your cats.In order to the water clean, the filter should be replaced in time, please replace them within 2 to 4 weeks.Colour: as shownMaterial: PlasticSize: 14cmPackage Contents:12 * FiltersOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.