Wall Mounted Variable Speed Control - Rheostat for Fireplace Blower Fan
Wall Mounted Variable Speed Switch, (rheostat control - like a light dimmer) which you can regulate air flow and any air noise from the fireplace fan.
This Wall Mounted Variable Speed Control easily replaces an Existing Wall Switch and connects to the wiring by interrupting the Black 'Hot' wire.
This 'Existing Wall Switch' would have been already connected to the Junction Box 'Outlet' in the lower vent space of your fireplace.
It would be nice if you also offered a model for a double wall switch