Replacement filter for cat fountain. Keep your cat's drinking water fresh, clean, and safe. Helps you take care of your cat's health. Most filters in the market are made of activated carbon. This filter is 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 other models of the same size - Size: 5in (outer diameter), 1.5in (inner diameter) - Dual-action filters: Resin and activated carbon - Resin helps soften water and reduce the chance of urinary issues - Activated carbon adsorbs impurities and odor, keeping the water fresh and clean - PP cotton filters out hair, sediment, and debris to clean water - Three types of filtration work together to improve water quality - The external cotton layer captures hair and debris - Three steps of filtration ensure water quality and enhance the taste of fresh water for your cats - Rinse the filter with water thoroughly before use; easy to mount on pet water fountain - For best results, replace the filter every 2 to 4 weeks to ensure clean water Specifications: - Name: Cat water fountain filter - Inside material: Activated carbon, resin - Size: Outer diameter: 127mm / 5in, inner diameter: 38mm / 1.5in, thickness: 8mm / 0.31in Package Information: - Package size: 14 * 14 * 11.5cm / 5.5 * 5.5 * 4.52in - Package weight: 205g - Gift box packaging Package List: - 12 x Cat water fountain filter