General Description This cat water fountain filter is designed to fit various fountains, ensuring a constant supply of clean, fresh water. With its dual-action filtration system, it effectively removes impurities and contaminants, ensuring superior water quality for your pet. Technical specifications Diameter: approx. 12.5 cm Quantity: 6 replacement filters included Compatibility and accessories Compatible with 1.5 litre to 2.8 litre and 5 inch fountains. Installation Before use, rinse the filter under clean water. Insert the filter into the cat or dog fountain. Usage Change the filter every 2 to 4 weeks to maintain water quality. Monitor the filter condition regularly to ensure optimal operation. Other information Made of high quality PP cotton and carbon active. Helps reduce odors and keep water fresh.