What is a top-mounted damper?
A damper installed at the top of the chimney. A cable runs down the chimney to a metal “L” shaped bracket which is mounted on the side wall of the firebox. The cable comes down and runs through the bracket. To close the damper at the top you pull down on the cable and lock it in the bracket. That pulls a stainless steel plate down over the top of the flue, thereby sealing it off.
