Enhanced Filtration Efficiency: Triple filtration system featuring a sponge layer, activated carbon, and ion exchange resin effectively removes hair and heavy metals from your pet's water, ensuring clean and safe hydration. Tailored Compatibility: Specifically designed to fit 67 oz, 95 oz, and 135 oz pet water dispensers, along with 84 oz stainless steel cat water dispensers, providing a perfect match for various fountain sizes. Optimal Performance: The premium pet fountain replacement filter and pre-filter sponge offer a precise fit ensuring seamless functionality, offering a space-saving solution that seamlessly integrates into your pet fountain setup. Longevity and Maintenance: To maintain peak performance, soak the foam filter for 5 minutes before use and replace it every 2-4 weeks based on your pet's water consumption habits and the number of pets in your household. Healthier Hydration Solution: By utilizing this replacement filter set, you provide your furry companions with clean water, filtered water that promotes their well-being by eliminating impurities and ensuring a continuous supply of clean drinking water. Item Name: Replacement Filter Material: Sponge Features: 3 Layer Filtration System, Efficient, Healthy Size Details: Filter: 10.3cm x 10.3cm/4.06" x 4.06" (Approx.) Sponge: 3.8cm x 2.54cm x 2.54cm/1.5" x 1" x 1" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 8pcs: 8 x Filter Replacement 8 x Black Sponge or 12pcs: 12 x Filter Replacement 12 x Black Sponge or 14PCS: 14 x Filter Replacement 14 x Black Sponge or 16pcs: 16 x Filter Replacement 16 x Black Sponge