- Wide Compatibility: Designed to fit 2.0, 2.8, and 4.0-liter pet water fountains, specifically optimized for 2.5-liter cat fountains. The filter ensures a perfect fit and easy handling across popular models. Ideal for 67, 95, and 135 oz sizes, with special optimization for 84 oz fountain systems. - Optimal Fit: Precision-engineered filter elements with exact dimensions provide a seamless interior connection, ensuring smooth water flow in your cat's drinking fountain. - Versatile Filter Solution: This 8-pack of filters features pre-filter technology to reduce replacement frequency. It ensures crystal-clear water in various settings, suitable for both single and multi-cat households. - Comprehensive Contaminant Filtration: The multi-layer filter system combines an odor-absorbing activated carbon layer, heavy metal-reducing resin, and particle-absorbing fabric to provide daily fresh drinking water free from impurities. Use Scenarios: 1. Perfect for busy households with multiple cats, maintaining clean and appealing drinking water without constant filter changes. 2. Ideal for cat owners looking for a reliable filtration solution that ensures their pets stay hydrated with safe and clean water. 3. Works seamlessly in various environments, whether at home or in a pet care facility, ensuring optimal water quality for all cats.