Enhanced Filtration Efficiency: Non-woven fabric effectively traps cat hair and impurities, ensuring cleaner water for your pets. The activated carbon eliminates odors, while the ion exchange resin softens water quality by removing heavy metal ions.Versatile Filter Sizes: The filter measures 6.5cm x 1.4cm, offering a universal fit for various pet water fountains. Y-type filter cotton dimensions of 3.6cm x 6.5cm x 2cm and round filter cotton of 2.4cm x 1.3cm provide comprehensive filtration coverage.Long-lasting Performance: Replace the filter and sponge every 2 to 4 weeks to maintain optimal water cleanliness and hygiene, especially in multi-pet households. The built-in pump sponge enhances filtration efficiency, preventing clogging and potential damage to the fountain.Easy Installation and Maintenance: Soak the filter cotton in water before placement for efficient operation. With simple instructions, replacing the filter is hassle-free, ensuring your pet's water dispenser is free from contaminants.Pet-Friendly Design: Tailored for XCHO pet water fountain, ensuring your furry friends always have access to clean water. After each filter replacement, replace the water in the water dispenser.Item Name: Filter Replacement Material: Non-woven Fabric, Activated CarbonFeatures: Activated Carbon Filter, Efficient, ConvenientSize Details:Filter: 6.5cm x 1.4cm/2.56" x 0.55" (Approx.)Y-type Filter Sponge: 3.6cm x 6.5cm x 2cm/1.42" x 2.56" x 0.79" (Approx.)Round Filter Sponge: 2.4cm x 1.3cm/0.94" x 0.51" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:6pcs:6 x Filters3 x Y-type Filter Sponges3 x Round Filter Sponges3 x Square Filter Spongesor12pcs:12 x Filter6 x Y-type Filter Sponges6 x Round Filter Sponges6 x Square Filter Sponges