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Bosch Evolution Refrigerator Water filter for the 500 Series and the 800 Series, also referred to as B20CS50SNand B20CS80SN. Remove foreign elements such as chlorine from your water and enjoy better tasting drinking water. This Replacement water filter cartridge by Water Sentinel is made to fit Bosch fridge models that use the EVOLFLTR10 filtration system, and fridges that have internal fitting cartridges. It is highly recommended you change out your water filter every 300 gallons or every 6 months.
Replacement Part Number: WSB-1, WSB1, 640565, 1257074, 55866-05, 55866-06, AP3961137, CS-52, CS52, B20CS5, B20CS8, CS-450, CS-451, CS-51, CS-52