These filters are only compatible with EveryYay® Get Fresh Whirlpool Pet Fountain Pet Water Fountain.
These filters have a 4 inch diameter and are about 0.4 inches thick.
To prevent the activated carbon dust from shedding into water, please soak the cat fountain filter in water for 2 minutes then rinse thoroughly under running water before using.
You should 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.