The MFD-S Manual Fireplace Damper for solid fuel prevents excess heat from escaping 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-S is a manualy operated and gravity activated fireplace damper for round chimneys. Although it is designed to support and function with an ENERVEX chimney fan, it works equally well without it. It can be used as a replacement for worn-out, zero clearance fireplace dampers.
The damper is operated with a pull chain and handle (included) mounted in the fireplace.