The GeneralAire 4770 is the correct replacement power box for the following air cleaner models:
The GeneralAire D2-0501 Complete Air Cleaner Power Box is a replacement power box for the GeneralAire GA50A22 Electronic Air Cleaner. The GeneralAire D2-0501 complete power box is a vital electronic component of your GA50A22 air cleaner that provides the power to improve the indoor air quality of your home. The GeneralAire 4770 is manufactured from high quality material by GeneralAire in order to be long lasting and effective.
GeneralAire D2-0501 Complete Air Cleaner Power Box specifications: