Replacement convection blower made by Fasco. This part is a variable speed motor with two wires and has 4 holes on the mounting plate.
It is 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
Fasco model number 50755-D500