8-pack Replacement Filters For Stainless Steel Water Fountain, 6-layer. Cat Water Fountain Filter Ensure Your Feline Friend Stays Happy and Healthy with Our Top-quality Cat Water Fountain Filter. Designed for Sensitive Cats, This Filter Effectively Removes Hair, Dander, and Odors, Reducing the Risk of Urinary Tract Infections and Kidney Issues. Key Features: - 6-in-1 Filtration System: Includes KDF, Ion Exchange Resin, Activated Carbon, Mineralized Ball, and Maifan Stone, All Nestled in 3 Layers of Dense Cotton Mesh for Optimal Freshness and Safety. - Optimal Water Quality: Eliminates Odors and Improves Water Taste, Encouraging Your Cat to Drink More. - Easy Maintenance: Simply Soak for 5 Minutes Before Use, and Clean Every 7 Days for Best Results. - Universal Fit: Compatible with Multiple Pet Fountain Models, Making It a Versatile and Economical Choice. - Sustainable Choice: Each Filter Can Purify Up to 30L of Water, Equivalent to 100 Bottles of 300ml Water. - - Outer Diameter: 5.9 Inches - Inner Diameter: 1.38 Inches - Thickness: 0.59 Inches - Includes 8 Filters Upgrade Your Cat's Hydration with a Filter That Prioritizes Their Health While Being Gentle on Your Wallet and the Environment..