Variable Speed Control - Rheostat for Fireplace Blower Fan
Variable Speed Switch, (rheostat control - like a light dimmer) which you can regulate air flow and any air noise from the fireplace fan.
This Variable Speed Control is easily wired into your fireplace blower's wiring by interrupting the Black Hot wire.
FireplaceBlower answered an email question, shipped quickly, and the installed control regulates fan speed for quieter operation. Recommended