Replacement filter for cat fountain. Keep your cat’s drinking water fresh and clean. Help you take care of your cat’s health. Most filters on the market are made from activated carbon. But these filters are made of high quality activated carbon resin and cotton mesh. The water is deeply purified and safer. features: value pack of 12 filters. compatible with Youthink Hommi Isyoung Koalad Happypapa Pedy and others of the same size. Cut: 5 inches (outer diameter) 1.5 inches (inner diameter). Dual Action Filters: Resin And Activated Carbon. The resin can soften the water and reduce the risk of lithiasis. Activated carbon can adsorb impurities and odors to keep water fresh and clean. pp cotton can filter capillary sediment and debris to clean water. Water quality can be eliminated by all three types of filtration. The outer cotton layer on each filter captures hair and debris. Three stages of filtration can ensure water quality and improve the taste of soft water for your cats. rinse the