Compatibility: ONLY Compatible with PETLIBRO Dockstream Cat Water Fountain PLWF105 / PLWF115 / PLWF005. If any doubt, please check product dimensions. Easy to Install and Clean: This filter for cat water fountain is easy to remove and replace, saving time during cleaning. Soak the pet fountain filter and sponge in water for at least 3 minutes before use to activate optimal filtration performance, then rinse thoroughly with 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 hair and heavy metals, while improving water taste and quality. High-quality replacement filters help keep pets hydrated with clean, fresh water. Premium 12 Pack Pet Fountain Filters: Includes 12 replacement filters and 10 pre-filter sponges, sealed for quality assurance. Provides enough supply for 3 to 12 months of use. 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 impurities, helping extend pump life. Product Benefits: Removes impurities Color: As shown in picture Material: Cotton Package Contents: 12 x Replacement Filters 12 x Pre-Filter Sponges Only the above items are included; other products are not included. Note: Light reflection and different display settings may cause slight color variation between the image and actual item. Measurement allowance is +/- 1-3 cm.