[Perfect Compatibility] - 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 36 Pack Filters + 36 Pack Sponges] - Package includes 36 replacement filters and 36 replacement pre-filter sponges. Each set is individually packaged and sealed to maintain quality. [4-Layer Vertical Filtration] - Ion exchange resin removes heavy metal ions and softens water. Activated carbon reduces odors. Non-woven fabric captures impurities and pet hair. 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 fresher, oxygenated water. For best results, replace filters every 2-4 weeks. If you have multiple pets, clean the fountain and change the filter more frequently. [Optimal Usage] - Soak the filter for 5 minutes and rinse before use to minimize activated carbon dust from entering the water. This dust is not harmful to pets. Color: White + Black Material: Non-woven fabric Package Contents: 36 x Replacement Filters, 36 x Sponges Note: Light reflection and screen settings may cause slight color variation between the image and the actual item. Measurement may vary by +/- 1-3 cm.