Replacement filter for pet water fountains. 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 these filters are made of high-quality activated carbon resin and 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. Size: 5 inches (outer diameter) 1.5 inches (inner diameter). Dual-action filter: Resin and activated carbon. Resin can soften water and reduce the risk of lithiasis. Activated carbon can adsorb impurities and odor, keeping the water fresh and clean. PP cotton can filter hair residue and debris to purify the water. Water quality can be removed through the three types of filtration. The outer cotton layer of each filter catches hair and debris. Three stages of filtration can ensure water quality and improve the taste of fresh water for your cats. Rinse the filter thoroughly with water before use. Easy to install on a pet water fountain. To ensure the water is purified, the filter should be replaced in time. Please replace them within 2 to 4 weeks. Specification: Name: Pet Water Fountain Filter Internal material: Activated carbon resin Size: Outer diameter: 127 mm/5 inches Inner diameter: 38 mm/1.5 inches Thickness: 8 mm/0.31 inches Package information: Package size: 14 * 14 * 11.5 cm/ 5.5 * 5.5 * 4.52 inches Package weight: 205 g Gift box packaging Package list: 12* Pet Water Fountain Filter