SET OF 8 WATER FILTERS DO FOUNTAINS AND DRINKERS FOR ANIMALS Filter properties: . Hair Catching - The sponge layer effectively captures hair from your pet's bowl, keeping them clean and comfortable to drink. Removal of impurities - The filter removes impurities that are in the water and those that could get do it during use, such as dust and pollen Freshness of water - Thanks to filtration, the water remains fresh and its taste and smell does not deteriorate. Active carbon class premium - removes chlorine bacteria and odors Ion-exchange resin - softens tap water to prevent diseases of your pet's urinary tract. Advantages of using filters: . Unprocessed water may contain calcium, magnesium and other contaminants that can lead do problems with the urinary system of animals. The filter fountain helps prevent this risk by keeping your pet away from urinary stones. Thanks to the three-phase cotton-sponge filter with replaceable ion cartridges and activated carbon, water is effectively purified. Activated carbon removes impurities, pet dander, dirt, food residue and sediment, ensuring the cleanliness and freshness of water. Additional information: The set includes 8 pieces of replaceable filters. We recommend replacing the filters every 2-4 weeks to keep the water in the fountain fresh and clean for your pet. Make sure that you rinse the filter thoroughly with water before the first use. The dimensions of the filter are illustrated on the graphic: outer diameter 110 mm, width 25 mm, thickness 10 mm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.