[Perfect Fit for Vortex and Swan Models] Designed specifically for Vortex and Swan pet drinking fountains, our T-shaped suction cup water filters ensure 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 simplifies installation and secures the filter in place, preventing bypass of unfiltered water. [Recommended Replacement Schedule] To maintain optimal water quality, replace the filter cartridge every 2–4 weeks, depending on usage. Regular replacement helps prevent buildup of impurities and ensures fresh, clean water for your pet. [Preparation Tips for Optimal Use] For best results, soak the filter in water for 5 minutes and rinse thoroughly for 30 seconds before installation. This pre-use preparation helps activate the filter media for effective filtration from the first use. Specification: 3 pcs Color: White Material: Plastic Package Contents: 3 x Filter Note: Light reflection and different displays may cause slight color variation between the image and the actual item. Measurement tolerance: ±1–3 cm.