DescriptionFully Compatible: This flower fountain filter is fully compatible with pet fountainsImprove water quality: Water quality can be reduced by three filtration methods. An outer polyester layer on each filter traps hair and dirt, and three-step filtration ensures water quality and improves your cats freshwater tasteEase of use: Rinse the filter thoroughly with water before use, so it can be easily installed into the fountainKeep your pet healthy: Each filter is composed of cotton layer, activated carbon and ion exchange resin, they can filter hair, heavy metals, improve the taste of water, let pets drink clean and fresh water all day long, help increase water consumption,reduce risk of urinary tract infectionWater Filter Replacement Frequency: Recommended to replace pet fountain filter every 2-4 weeks to maintain water quality, if multiple pets are using the fountain, the pet fountain carbon filter needs to be replaced more frequently Product Packaging: 4* filter Attention 1. Due to manual measurement, please allow for minor errors. Please ensure that you do not mind before bidding. 2. Colors may vary depending on the monitor, please understand. Hello, please pay attention to your shipping address when purchasing products. If your delivery information (such as name, street, house number, doorbell/email without a name, etc.) is incorrect, the order will not be delivered correctly.