Replacement filter for cat fountain. Keep your cat's drinking water is fresh, clean and safe. Helping you to take care of your cat's health. Most of the filters in the market are made of activated carbon. But this filters are made of high quality activated carbon, resin and Non-woven fabric cotton mesh. The water is deeply purified and safer.[Applicable Model]: This Cat Fountain Filter Replacement is fit well with WF050 WF060 transparent fountains.[Easy to Use]Rinse the filter with water about 10 mins before use, replace it every 4 to 6 weeks to fresh the water.[Usage Time]suggests to replace the filter every 4 to 6 weeks. It depends on your use.[Fresh Water]uses high-density and high-content activated carbon filter whcih can effectively maintain water quality, increase oxygen content to keep cats healthy.Colour:White BlueMaterial:Non-woven fabricSize:11 x 4 x 3CMPackage Contents:12 * pet fountain replacement filtersOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.