Compatible: These filters are compatible with cat water fountains for CHEERBLE, fitting and performing perfectly to provide pets with the best drinking experience. Triple Filtration: The pet fountain filter contains activated carbon, ion exchange resin, and non-woven fabric to eliminate odor, remove heavy metals, and soften water. Clean Regularly: Clean the pet drinking fountain pump replacement every one week to extend the service life of the pump and ensure water quality. Warm Tips: Please rinse the filter thoroughly before use to prevent carbon particles from leaching into the water, ensuring your pet enjoys clean and fresh water. Regular Replacement: To maintain filtration effectiveness, replace the filter every 2–4 weeks. For multiple pets, consider shortening the replacement cycle. Improved Taste: Filters reduce the taste and odor of chlorine in tap water, making it more appealing to cats. Quantity: 16 pcs Color: As shown Material: Non-woven fabric + activated carbon Package Contents: 16 × Pet Water Fountain Filters Note: Only the above package content is included; other products are not included. Light reflection and differences in display screens may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1–3 cm.