- Wide Compatibility: Designed to fit 2.0, 2.8, and 4.0-liter drinking fountains, with a special focus on 2.5L cat fountains. This filter ensures a reliable fit for popular models, making it ideal for 67, 95, and 135 oz systems, and optimized for 84 oz well systems. - Precise Dimensions: Engineered for a perfect fit, this filter allows for easy insertion and a secure hold without gaps, specifically tailored for standard filter holders in pet waterers. - Extended Use: The 8-pack provides an extended operational lifespan, reducing the need for frequent filter changes. The combination of high-quality materials and multi-layer filtration ensures dependable performance over time. - Comprehensive Filtration: Features a multi-layer filter system that includes an odour-binding activated carbon layer, heavy metal filtering resin, and particulate-absorbing fleece. This synergistic design guarantees fresh, impurity-free drinking water daily. Use Cases: 1. Home Use: Ideal for busy pet owners who want to ensure their cats and dogs have access to clean water without the hassle of frequent filter changes. 2. Multiple Pets: Perfect for households with multiple pets, providing a long-lasting solution to keep their water sources fresh and safe. 3. Traveling: A great option for pet owners on the go, ensuring clean water is always available during trips without extra maintenance.