Replacement for Frigidaire filters FC-100, FC100, WF2CB, SWF2CB, NGFC 2000, NGFC2000, NGFC-2000 NSF-certified Reduces cysts by 99.99% Particulates (Class 1) by 98.5%, Turbidity by 99.70%, Lead by 99.30% Particulates (class III) by 98.6%, Mercury by 91%