[Perfect Compatibility] - The replacement fountain filters are compatible with 84oz Dockstream wireless water fountain models PLWF005, PLWF115, and PLWF105. (Filter size: 3.78 x 2.28 x 0.39 in | Sponge size: 1.37 x 1.18 x 0.35 in). [Premium 12 Pack Filters + 12 Pack Sponges] - Package includes 12 replacement pet fountain filters and 12 replacement pre-filter sponges. Each set is individually packaged and sealed to maintain quality. [4-Layer Vertical Filtration] - 1. Ion exchange resin helps remove heavy metal ions and softens water. 2. Activated carbon helps reduce odors. 3. Non-woven fabric helps capture impurities and pet hair. 4. Built-in pump sponge helps filter debris to prevent clogs and protect the pump. [Replace the Filter Regularly] - Multi-layer filtration helps remove contaminants and provides cleaner, fresher-tasting water. For best performance, replace filters every 2 to 4 weeks. In households with multiple pets, clean the fountain and change the filter more frequently. [Optimal Usage] - Soak the filter in water for 5 minutes and rinse before first use to reduce activated carbon dust, which is not harmful but may discolor the water. Color: White + Black Material: Non-woven fabric Package Contents: 12 x Replacement Filters, 12 x Sponges Note: Light reflection and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.