General description Cat Water Fountain Filter is designed for optimal filtration in pet fountains, ensuring fresh and clean water for your dogs and cats. This pack includes 10 round replacement filters featuring a triple filtration process that effectively removes impurities and odors. Technical specifications Material: Premium resin and activated carbon Outer diameter: 12.5 cm Inner diameter: 3.5 cm Filtration area: 150 cm³ Temperature range: 4°C to 38°C Installation Rinse the filter for 3-5 minutes with water before use, ensuring it is completely wet. Install the filter with the flat side facing up for better filtration. Usage It is recommended to replace the filter every 2-3 weeks to maintain water freshness. Other information Not compatible with Catit/Toozey fountains.