[ for and for Swan Models]Designed specifically for and for Swan pet drinking fountains, our T-shaped suction cup water filters a seamless fit and optimal functionality. Each filter is crafted to effectively trap pet hair and debris, maintaining clean drinking water for your pets. [Effortless Installation and Secure Suction]Our cat fountain replacement cartridges are engineered with easy-to-install suction cups that attach directly to the water inlet hose. This design not only simplifies the installation process but also secures the filter in place, preventing any bypass of unfiltered water. [Recommended Replacement Schedule]To maintain optimal water quality, we advise replacing the filter every 2-4 weeks, depending on usage. Regular replacement helps prevent build-up of impurities and ensures that your pet's water is always fresh and clean. [Preparation Tips for Optimal Use]For best results, we recommend soaking the new filter in water for 5 minutes and rinsing it thoroughly for before installation. This pre-use preparation helps activate the filter media, ensuring effective filtration from the first use. Specification:B:18PCS Colour:White Material:plastic Package Contents: 18 x Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.