Replacement filter for cat fountain. Keep your cat's drinking water is fresh clean and safe. Helping you to take care of your cat's health. Most of the filters in the market are made of activated carbon. But this filters are 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 of same size. Size: 5in(outer diameter) 1.5in(inner diameter).Dual-action filters: Resin and active carbon. Resin can soften water and reduce the chance of lithiasis. Activated carbon can adsorb impurities and odor keep the water fresh and clean.PP cotton can filter out hair sediment and debris to clean water.Water quality can be removed by the three 3 types of filtration. The external cotton layer on each filter captures hair and debris. Three steps of filtration can assure the quality of the water and enhance the taste of fresh water for your cats.Rinse the filter with water thoroughly before using easy to mount it on pet water fountain.In order to ensure the water clean the filter should be replaced in time please replace them within 2 to 4 weeks.Specification:Name: Cat water fountain filterInside material: Activated carbon resinSize: Outer diameter: 127mm or 5in inner diameter: 38mm or 1.5in thickness: 8mm or 0.31inPackage Information:Package size: 14 x 14 x 11.5cm or 5.5 x 5.5 x 4.52inPackage weight: 205gGift Box PackagingPackage List:12x Cat water fountain filter Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.