Cat Water Fountain Replacement Filters for PETLIBRO PLWF105/PLWF115 Compatibility: Only compatible with PETLIBRO Dockstream Cat Water Fountain models PLWF105, PLWF115, and PLWF005. Please verify product dimensions if uncertain. Easy to Install and Clean: These filters are simple to remove and replace, saving time during cleaning. Soak the filter and sponge in water for at least 3 minutes before first use to activate optimal filtration performance, then rinse thoroughly under running water. Helps keep water fresh for a longer period. Healthy Filter Ingredients: Triple-stage filtration system includes activated carbon, ion exchange resin, and non-woven fabric. Effectively reduces impurities such as pet hair and heavy metals while improving water taste and quality. High-quality replacement filters help support pet health and hydration by providing clean, fresh water daily. Premium 12-Pack Includes: 12 replacement filters and 12 pre-filter sponges, sealed for quality assurance. Supplies last 3 to 12 months depending on usage. Replace pre-filter sponge every 2–4 weeks. Filter Sponge & Pump Sponge: High-density pre-filter sponge captures fine debris to enhance filtration efficiency. High-density pump sponge protects the pump by trapping particles, helping extend pump lifespan. Product Details: Color: As shown in picture Material: Cotton Package Contents: 12 x Replacement Filters, 12 x Pre-Filter Sponges (other items not included) Note: Lighting and screen settings may cause slight color variations. Measurement tolerance: ±1–3 cm.