Cat Water Fountain Filters - 4/8 Pack Pet Hydration Essentials. Enhance Your Cat's Hydration with Our Premium Cat Water Fountain Filters. The Innovative Three-layer Filtration System Consists of a Cotton Layer, Activated Carbon, and Ion Exchange Resin, Effectively Removing Hair, Particles, and Heavy Metals to Provide Your Pet with Cleaner, Fresher Water. Designed to Fit 84oz/2.5L Square Cat Fountains, Each Filter Offers a Perfect Fit and Reliable Performance. The Filters Are Individually Sealed to Ensure Freshness Until You're Ready to Use Them. Key Features: - Advanced Filtration: Three-layer System with Cotton, Activated Carbon, and Ion Exchange Resin. - Perfect Fit: Made for 84oz/2.5L Square Cat Fountains. - Easy Maintenance: Soak and Rinse Before Use; Replace Every 2-4 Weeks. - Convenient Packaging: Available in Sets of 4 or 8 Filters. - Reliable Support: Includes a 12-month Warranty with Dedicated Customer Service. - Material & Size: Resin; Dimensions 4.8 Diameter X 0.39 Height; Weight 0.15 Kg. - Certified Safety: NSF Certified and Free from Harmful Chemicals. Keep Your Pet Healthy and Hydrated with Superior Water Filtration..