General description This 4 Pieces Water Fountain Filter is designed for cats and dogs, ensuring a perfect match with 84oz/2.5L stainless steel pet fountains. The filters are individually packaged to maintain their integrity and effectiveness. Technical specifications Quantity: 4 pieces Filtration system: Triple Filtration (cotton, activated carbon, ion exchange resin) Usage Rinse the filter before use. Replace the filter every 2 to 4 weeks. Other information Effectively filters hair, heavy metals, and impurities, keeping water fresh and improving water quality. Helps reduce the risk of urinary tract infections, which is crucial for pet health.