Compatibility :Pet Fountain Filters Compatible Only with WF020 Pet fountains.
Rectangular Shaped Filter : Longest Side is about 4.7 inch, Width is about 1.18 inch,Thickness is about 0.87 inch.
Package Content : 10 pcs of premium pet fountain replacement filters, individually packaged and sealed to maintain high quality.
Premium Quality Filters : Triple Filtration System, Composed of a Sponge Layer, activated carbon Layer and an ion exchange resin Layer. Effectively to filter hair, heavy metals, keeps water fresh and improve the taste of the water.
Frequency Of Replacement : To prevent the activated carbon dust from shedding into water, please soak the cat fountain filter in water for 10 minutes then rinse thoroughly under running water before using. 1 to 4 weeks in summer and 2 to 6 weeks in winter. If multiple cats are using the fountain, more frequent replacement will be necessary.