[Perfect Compatibility] - The replacement cat fountain filters are compatible with 84oz Dockstream wireless cat 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 24 Pack Filters + 24 Pack Sponges] - Package includes 24 replacement filters and 24 replacement pre-filter sponges. Each set is individually packaged and sealed to maintain quality. [4-Layer Vertical Filtration] - 1. Ion exchange resin removes heavy metal ions and softens water. 2. Activated carbon reduces odors. 3. Non-woven fabric captures 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, better-tasting water. For best performance, replace filters every 2 to 4 weeks. For 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 use to reduce activated carbon dust from entering the water. This dust is not harmful to pets. Color: White + Black Material: Non-woven fabric Package Contents: 24 x Replacement Filters, 24 x Sponges Note: The actual product may vary slightly in color due to lighting and screen settings. Measurement may vary by +/- 1-3 cm.