General description This 12-piece cat water fountain filter set is designed for various pet fountains, including Avalon, Pagoda, and others. It features a three-layer filtration system that ensures your pet's drinking water is always fresh and clean by removing hair, dirt, odors, and other contaminants. Technical specifications Includes 12 replacement filters and 12 foam pre-filters Dimensions: Compatible with 1/2 gallon, 1 gallon, 2 gallon pet fountains Compatibility and accessories Compatible with Butterfly, Avalon, Pagoda, Seascape, Sedona, Seaside, and Creekside pet fountains Installation Soak the filter in water for 5 minutes before use Rinse thoroughly under running water Usage Replace the filter every 1-2 weeks in summer and every 2-4 weeks in winter More frequent replacement is recommended if multiple animals use the fountain Other information