[Green Material]: Ours Pet Water Fountain Filter uses coconut shell activated carbon,High-quality coconut shell is used as raw material.In addition, there are cationic components, which have the function of cleaning and activation, and belong to the green purification method.[Efficient Ftriple Filtrations]: Pet Fountain Filter Replacement made of top quality cotton and premium activated carbon,help to get rid of chlorine, filter hair and residue, remove odors and soften water, getting better water tasting. ensure that every drop is healthy, making water more clean and fresh.[Filter Frequency of Replacement]: Change a Pet Water Fountain Filter Replacement after using 2 to 4 weeks to keep water running fresh and clean.if multiple pets are using the fountain, more frequent replacement will be necessary.[Cat Filter Water Fountain Instructions for Use]: Rinse the Cat Fountain Filter Replacement with Water thoroughly before use. Then install the Pet Water Filter Replacement into the cat drinking water fountain. Note: Please soak the filter in water for 2 minutes and rinse it thoroughly under running water before use.[24-Hour Service]: Our prime interest lies in customer satisfaction. If there is any quality problems with your Pet Fountain Filter please don’t hesitate to contact us, we will solve The problem within 24 Hours, just message us before leaving a review.Size:8 pcs  |  Color:White 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.  Specification: 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 * 8 * 13cm/ 5.51 * 3.15 * 5.12in Package weight: 118g Gift Box Packaging Package List: 8* Cat water fountain filter