The GeneralAire 975-49 is the correct replacement for the following humidifiers:
The GeneralAire 975-49 Impeller and Impeller Screw, also known as part number 6013, fits the GeneralAire Whole House Leagacy Series Humidifiers. GeneralAire is also known by the following spelling variations: General Aire, GeneralAir and General Air. The Impeller and Impeller Screw is attached to the 975-16 R.H. lid assembly and the 975-13 L.H. lid assembly.
GeneralAire Impeller and Impeller Screw Assembly 975-49 specifications:
The GeneralAire 1042 Legacy Series Humidifiers allows a portion of the heated air from the furnace to pass through a water-soaked pad where it absorbs additional moisture to distribute throughout the air in your home. Water is metered into the GeneralAire KineticFlo Trough and then dispersed evenly across the pad. Unevaporated water drains from the bottom of the unit in order to eliminate mineral build-up.