Our replacement Filters are compatible with PETKIT EVERSWEET 2, EVERSWEET 3 and PURE DRINK water fountains. Please purchase the PETKIT Filter Tray+ if you wish to use with the PETKIT EVERSWEET 1.0 Pet Water Fountain.
Diameter of the hollow circle is about 0.5 inch. Diameter is about 5.5 inches. Thickness is about 0.4 inch.
To prevent the activated carbon dust from shedding into water, please soak the filter in water for 2 minutes then rinse thoroughly under running water before using.
Replace the filter every 1 to 2 weeks in summer and 2 to 4 weeks in winter. If multiple cats are using the fountain, more frequent replacement will be necessary.