- Wide Compatibility: This filter is designed to fit 2.0, 2.8, and 4.0-liter drinking fountains, specifically optimized for 2.5L cat fountains. It ensures easy handling and a reliable fit for the most common models, making it ideal for 67, 95, and 135 oz systems, and optimized for 84 oz well systems. - Secure Hold: With precise dimensions of 10 x 10 x 1 cm, the filter provides a firm fit in cat fountain systems. Its tailored shape prevents slipping during operation, ensuring compatibility with original installation spaces. - Combination Set for Extended Use: This package includes 8 high-quality replacement filters, providing consistent performance for weeks. The optimized double effect filtration technology reduces maintenance effort while ensuring all standard drinking water systems are well-served. - Comprehensive Pollutant Filtering: The multi-layer filter system features an odour-binding activated carbon layer, heavy metal filtering resin, and particulate absorbing fleece. This combination effectively removes impurities, delivering fresh, clean drinking water daily. - Practical Use Scenarios: Ideal for busy households with multiple pets, the consistent filtration helps maintain a healthy hydration environment. Great for pet owners who prioritize water quality, ensuring your cat always has access to clean water. Perfect for families who want to reduce the hassle of frequent filter changes while maintaining a safe drinking source.