Replacement filter for cat fountain. Keeps your cat's drinking water fresh, clean, and safe, helping support your cat's health. Features: Value pack of 12 filters. Compatible with Drinkwell 360 Fountain cat water fountain. Activated carbon helps remove residual chlorine, impurities, and pollutants to keep water fresh and clean. Filtration helps maintain water quality and enhance the taste of fresh water for cats. To ensure clean water, replace the filter regularly every 2 to 4 weeks. If you have any questions, feel free to contact the seller. Specifications: Name: Cat Water Fountain Filter Internal Materials: Activated Carbon, PP Compatible With: Drinkwell 360 Fountain Size: 37 x 72mm Note: Slight variations in size or color may occur due to manual measurement or lighting conditions. Package Information: Package Dimensions: 21 x 16.8 x 4cm Package Weight: 410g Plastic Packaging Package Contents: 12 x Cat Water Fountain Filters