Our 6 pack of water fountain filters offer you long term usage, and each filter is well-sealed and individual packaged. Adopt activated carbon, premium cotton and premium ion resin, effectively solve hair, debris, harmful microorganism and excessive ions problems. Filter need to be replaced every 2-4 weeks and more frequent replacement is required if multiple pets exist. Fit for 2.5L/84.5oz pet water fountain(GPCT4135) sold in our online store. Perfect Match: Compatible with 2.5L/84.5oz pet water fountain(GPCT4135) sold in our online store. 6 Pack of Filters: Include 6 pack of replaceable filters, each filter has individual package and well-sealed. Keep Your Pet Healthy: Adopt cotton to filter pet’s hair and debris, premium activated carbon solves microorganism problems, and ion resin reduces excessive calcium and magnesium ions in water. Provide cleaner water and keep your pet healthy. Replacement Frequency: It’s recommended that you should replace filter every 2-4 weeks. And if there are multiple pets using the fountain, please replace it more frequently. Easy To Use: Just take out the water spray tray and replace the filter. A simple operation to guarantee a healthy drinking of your pets. Friendly Reminder: In order to prevent the activated carbon dust (harmless to pets) from entering into water, please rinse the filter with water thoroughly before use. Brand: iMounTEK Product Type: Pet Fountain Filter Material: Activated Carbon Ion Resin Cotton Filter Color: White Service Time: 2-4Weeks Item Size:10.5x8.7x1cm/4.13x3.42x0.39in Item Weight: 12g/0.02lbs Package Size: 12*10*7.5cm/4.72*3.94*2.95in Package Weight: 120g/0.26lbs 6x Pet Fountain Filters