Fasco Convection Fan (Room Air Blower). This part is a variable speed motor with two wires and has 4 holes on the mounting plate.
Compatible with some models of the following brands: Arrow Heating, Earth Stove, Even Temp, Heat Tech Industries, Martin Industries, Mt. Vernon, Nesco, Regency, Travis, US Stove, Waterford
This part is Fasco model # 50755-D500