Fully Compatible: This flower fountain filter is fully compatible with Dadypet pet water fountain. Size: 4.9*0.4inch. Improve Water: Water quality can be improved by the three three types of filtering. The outer polyester layer of each filter traps hair and debris. Three levels of filtration can ensure water quality and improve the taste of fresh water for your cats. 6 Packs in One Box: When you purchase this high-quality product, you will receive 6 pet drinking fountain filters. Easy to Use: Rinse the filter thoroughly with water before use and simply mount it on the pet drinking fountain. Company. Features: Material: Cotton + Carbon Color: White Item Diameter: 12.5cm/ 4.93inch Package Size: 18 * 14 * 6cm/ 7.08 * 5.5 * 2.3inch 120g/ 4.2oz Note: Please replace a new replacement filter once a year months to maintain the freshness of the water. One pack of replacement filters can be used for six months.