Cat fountain replacement filter. Keep your cat’s drinking water fresh, clean and safe. Helps you take care of your cat’s health. Most filters on the market are made of activated carbon . But this filter is made of high quality activated carbon resin and cotton mesh. The water is deeply purified and safer. Features: Economy pack of 12 filters. Compatible with Youthink Hommi Isyoung Koalad Happypapa Pedy and others of the same size. Dimensions: 5 (outer diameter) 1.5 (inner diameter). Double-effect filter: resin and activated carbon. The resin softens the water and reduces the risk of stones. Activated carbon can absorb impurities and odors, keeping the water fresh and clean. PP cotton filters hair deposits and debris to clean water. Water quality can be removed by three types of filtration. The outer cotton layer of each filter traps hair and debris. Three-stage filtration preserves water quality and improves taste fresh water for your cat. Thoroughly rinse the filter with water before