Compatibility Guaranteed: This carbon filters, pre-filter sponges, and 8D filter sponges, designed specifically for 2L/67oz round stainless steel pet water fountains. a and optimal filtration with these tailor-made components. Advanced Triple Action Filtration: Each filter features a three-layer system consisting of high-density cotton, coconut shell activated carbon, and ion exchange resin. This powerful combination effectively removes hair, debris, heavy metals, and enhances water taste, ensuring your pet enjoys fresh and clean water. Enhanced Pre-filter & 8D Sponge System: The high-density pre-filter sponge captures additional impurities, maximizing the filter's performance. The innovative 8D filter sponge prevents debris from entering the pump, extending its lifespan and maintaining efficient operation. User-Friendly Maintenance: For optimal performance, replace the filter and sponge every 3-4 weeks, or more frequently in multi-pet households. This regular maintenance ensures the fountain operates smoothly and provides clean water consistently. Installation Tips: To the best performance and water clarity, rinse each filter thoroughly with drinkable water for 3-5 minutes before use. This initial flushing removes excess carbon dust and prepares the filter for immediate use, keeping your pet's water pristine. Product Benefits: Removes Impurities Colour:As Shown Material: Fiber Package Contents: 5 x Filter 5 x Sponge 5 x 8D Sponge 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.