Frigidaire / Westinghouse models built after April 2001 that have the energy compliant PureSource water filtration system use the WF1CB filter. It may be noted by the blue top and bottom ends on the filter itself. Replaces part numbers RG100, RG-100, and Kenmore part 46-9910.

Reduces the following contaminants: 98.30% of particulates (Class III), and 96.50% of chlorine (Class I).