Note: This product is on factory backorder. Estimated to be be available sometime in April 2010. 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.