Description Replacement filter for cat fountain. Keep your cats drinking water fresh, clean and safe. Help you take care of your cats health. Most filters on the market are made of activated carbon. But these filters are made of high quality activated carbon, resin and cotton mesh. The water is deeply purified and safer. Features: Compatible with YOUTHINK, HOMMI, ISYOUNG, KOALAD, HAPPYPAPA, PEDY, DADYPET, automatic flower fountain and others of the same size. Size: 5 inches (outer diameter), 1.5 inches (inner diameter). Double 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, keep water fresh and clean. Full grid filtering is more efficient. Water quality can be eliminated by the three 3 types of filtration. The outer cotton layer on each filter captures hair and debris. Three stages of filtration can ensure water quality and enhance the taste of fresh water for your cats. Rinse the filter thoroughly with water before using, easy to mount on the pet water fountain. In order to ensure the cleanliness of the water, the filter should be replaced in time, please replace them within 2-4 weeks. Any problem, please contact our store without hesitation. Honor to serve you! Specification: Name: Cat water fountain filter Inner material: activated carbon, resin Size: outer diameter: 127 mm / 5 inch, inner diameter: 38 mm / 1.5 inch, thickness: 8 mm / 0.31 inch Package information: Package size: 13 .2 * 6 * 13 cm / 5.20 * 2.36 * 5.12 inch Package weight: 190g Gift box packaging Package list: 6 * Filter for cat fountain