Residential Products  >  Accessories
Mechanical Fireplace Damper

This MFD Mechanical Fireplace Damper prevents heat from escaping up through the chimney when the fireplace is not in use, and prevents backdraft down the chimney. It is designed for chimney top installations.

The MFD is used as a component in a combined fan and damper system. The damper actuator can be interlocked to a control (ADC100 or ADC150) so it only operates when the fireplace is in use and the fan is running.

The damper is equipped with fail safe system and is rated for 1400°F (760°C).


  • Saves energy
  • Meets energy code requirements
  • Integrated fail safe system
  • Low profile


Available Sizes (ID) 6" to 16" (150mm to 400mm)
Material Stainless Steel 316L
Actuator Brushless DC Motor
Power 120VAC or 24VAC/VDC Brushless Motor
Torque 54 in-lbs (6 Nm)
Speed 90° in 15 Sec.
End Switches 2
Temperature Rating 1400°F (760°C)
Warranty 2-year Factory Warranty

MFD Mechanical Fireplace Damper—automated chimney-top mounted damper used in a combined fan and damper system
RS Chimney Fan—disperses the smoke sideways (horizontally) just like a standard chimney cap
Chimney Fan

Makes it easy to control your gas-fired fireplace and adds safety features, while being whisper-quiet.

BDC 8 Fan and Damper Controller—maintains fan speed for gas and oil-fired boilers, fireplaces, water heaters, and furnaces
Fan and Damper Controller

A simple fan and damper control for gas- and oil-fired boilers and water heaters that maintains a set fan speed where modulation is not required.