A leaky damper lets all the heat from your fireplace out, even when it's closed. A Top-Sealing Damper mounts on top of your chimney and seals off leakage. Tests reveal this Top-Sealing Damper eliminates as much as 90% of the air loss of a traditional damper.
A special feature of the Top-Sealing Damper is the Power Lever. A tug on the cable drives a piston upward, allowing the damper to open easily, even in freezing weather.
And here's something you won't see very often (if at all). The Top-Sealing Damper comes with a lifetime warranty that covers damage resulting from chimney fires.
Eight popular sizes.