The GeneralAire 4728 is the correct replacement fan motor for the following air cleaner models:
The GeneralAire C7-070D Air Cleaner Fan Motor is a replacement fan motor for the GeneralAire Model SSCB7 Electronic Air Cleaner. The GeneralAire C7-070D fan motor attaches to the C7-0710 fan blade and allows your SSCB7 air cleaner to operate at full capacity. The GeneralAire 4728 fan motor is an OEM replacement part that is built to last.
GeneralAire C7-070D Air Cleaner Fan Motor specifications: