GE's MXRC Refrigerator water filter fits all older GE and Hotpoint Refrigerators with water filters. The MXRC replaces part numbers: MXRC FXRC FXRT HXRT 9905 46-9905 The GE MXRC SmartWater Filter reduces lead, cysts, taste and odor, chlorine, sediment, and turbidity in your water & ice. This GE MXRC refrigerator water filter meets NSF / ANSI standard 42 for the reduction of: Chlorine Particulates Class I The GE MXRC refrigerator water filter meets NSF / ANSI standard 53 for the reduction of: Lead Cysts Turbidity You should replace your GE MXRC refrigerator water filter every six months or if your water has a bad taste or odor.