Manitowoc K-00339 Arctic Pure AR-20000 and AR-40000 Replacement CartridgeWhen the ice becomes cloudy or difficult to break apart due to thick freezing, it's a clear sign that your filter needs replacing. The Manitowoc Ice K 00339 Filter Replacement is a geniune OEM (original equipment manufacturer) replacement part designed for K 00339, AR 20000, and AR 4000 filter replacement. Manitowoc Beverage provides state of the art ice machines for the foodservice and beverage industry. Use genuine OEM parts for safety, reliability,