A closed front, vented room heater, such as the RH-50C or the RH-65C does not come with an installed blower. While warm air is vented out the top, simply adding an FRB-3 blower will help spread the warmth throughout the room. The optional blower is for use with the RH-50C and RH-65C Vented Room Heaters.
The blower is factory installed on the visual flame RH-50B, RH-65B, and the closed front RH-50CB, and RH-65CB models.