Compatibility Guaranteed: Specifically designed for PETLIBRO Dockstream models PLWF105, PLWF115, and PLWF005, these replacement filters ensure a perfect fit. Check your model before purchase to avoid any inconvenience and enjoy a seamless replacement experience. Advanced Triple Filtration: Equipped with activated carbon, ion exchange resin, and a non-woven fabric layer, these filters effectively remove debris, hair, and impurities. They also soften water and eliminate odors, ensuring fresh, clean water for your pets. Effortless Installation: For optimal performance, soak each filter in water for 5 minutes and rinse under running water before use. Replace every 1-2 weeks during summer and 2-4 weeks in winter, or more frequently in multi-cat households, to maintain water freshness. Ultra-Quiet Operation: Designed to minimize noise, these filters operate quietly, preventing any disturbance to your pets. The peaceful environment maintained by the ultra-quiet operation helps keep your pets calm and hydrated without stress. Comprehensive Package: The ample supply ensures you are well-prepared for regular maintenance, making filter changes hassle-free and efficient. Specifications: 4+4 Color: As Shown Material: Non-woven fabric Package Contents: 4 * Cat Water Fountain Filters 4 * Sponges Foam Filters