Product information:
-Type: 4 Activated Carbon Filter
-4 Activated Carbon Filter: Activated Carbon
-Size: Outer diameter: 127mm or 5in, inner diameter: 38mm or 1.5in, thickness: 8mm or 0.31in

Contents in Box:
-6 or 12 x Cat Water Fountain Filter

More information about product:
-Compatible with youthink, hommi, isyoung, koalad, happypapa, pedy, automatic flower fountain 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. 2 activated carbon filter Only.
-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.