GE MWF SmartWater Water Filter from Blue Signature (1) MWF Smart Water Filter Designed in USA Economical alternative to GE MWF (expensive oem). Smart Water filter mwf compatible to provide up to 6 months of life or 350 gallons. GE MWF Compatible Filter, tested against NSF/ANSI 42 and 53 standards for materials & structural integrity refrigerator water filter mwf requirements. Will remove or reduce Pharmaceuticals, Chlorine, Tastes, Odors and Cysts that may be present in your drinking water. Simple & Detailed (Multilingual) INSTRUCTIONS included. Risk Free No Hassle 60 Day Money Back Guarantee by Manufacturer.