Brand New, Open Box! Best GE MWF Refrigerator Water Filter Smartwater Compatible Cartridge Replace your GE refrigerator's water filter with the MWF filter cartridge. It uses carbon block filtration technology to filter contaminants from tap water, resulting in clean, drinkable water, and it makes ice as well if your fridge supports it. This Best GE water filter cartridge installs easily in the back of your refrigerator above the top shelf. REPLACES GE MWF SUPERIOR WATER FILTRATION SAME GREAT QUALITY AT A FRACTION OF THE PRICE CHANGE YOUR FILTER EVERY 6 MONTHS GREAT ITEM AT A GREAT PRICE!!