Clean, great tasting water and ice is what you get when you purchase the Bosch 644845 400-gallon capacity OEM water filter by cuno. A Bosch premium water filter made by cuno means you are receiving the expertise of a world leader in liquid filtration that has been around for more than 90 years. With this filter you are assured of getting high quality water for your home or your business that is free of harmful contaminants such as chlorine, dirt, rust and other particles, as well as unpleasant odors and tastes. The materials used in making the Bosch 644845 by cuno water filter are top quality ensuring that the product lasts longer while filtering away most of the impurities that give water a strange odor and taste. This water filter will also prolong the life of your refrigerator. It was designed to lessen the sediment deposits in your refrigerators ice machine. The filtration process handled by this water filter involves the passing of the water from the exterior surfaces until it goes into the middle of the cartridge. With every filtering layer that the water goes through, the pores of the filters become smaller, so as to get rid of even the most minute particles or impurities in water. It does not remove minerals which may be beneficial to health such as fluoride. The interval of the changing of these filters is dependent on the quality of your water as well as on the water consumption of your entire household. The 644845 is the replacement filter for the following refrigerators: Bosch: Kad62 series, Siemens: Ka62 series, Neff: K5930 and K5920 series. Cuno Inc. A 3M company, is the original equipment manufacturer (OEM) for BOSCH water filters. They are a world leader in the design, manufacture and marketing of filtration products for the separation, clarification and purification of fluids and gasses. Its proprietary products are widely used throughout the global healthcare, industrial and water markets to make customers more successful.