For Most Cat Fountains: Measuring about 4.41x4.41x0.31 inch, these cat fountain filters fit most pet fountains. The 6 pcs of automatic cat water fountain filters a continuous supply of clean and fresh water for your pet. Cost-Effective and Long-Lasting: Keep your pets hydrated without straining your budget. Our pet fountain filters offer exceptional durability and value, providing consistent filtration performance month after month. Easy Installation andamp; Replacement: Simple to install, remove, and replace, these cat fountain filters help maintain optimal water cleanliness. We recommend replacing the filter every 2-4 weeks. Triple Filtration System: Our cat fountain filters feature a triple-layered design with activated carbon, cotton layer, and ion exchange resin, effectively removing hair, impurities, and enhancing water taste, providing your pets with clean and fresh drinking water. Promotes Pet Hydration: Our pet fountain filter replacement help clean and fresh water encourages pets to drink more, promoting better hydration and potentially reducing the risk of urinary tract problem and related health issues. Material: plastic colour: As Shown Package Contents: 6 x Cat Water Fountain 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.