about this item: Compatible: The fountain filter size is 12.7 x 12.7 x 1 cm and the center circle diameter is 3.8 cm. Please measure your fountain and check before ordering if the filter can be installed in your fountain. High Quality Material: The replacement filter uses natural materials non-woven fabric, coconut shell activated carbon and ion-exchanging resin. It can catch pet hair and dust, it can effectively filter dirt and remove bad smell in water. Easy to Use: Just put the raised side up and the flat side down, easy to install. Please rinse the filter with water before using. You Will Receive: 12 Pieces Cat Water Fountain Filter. The internal material of the filter increased by 30%. The raised material can help improve the efficiency of filtered water. Extend lifespan and provide pets with clean water. Tips: We recommend changing the replacement filter every 2-4 weeks to keep the water clean. Always ensure the health of pet drinking water and help your pets love drinking
