The Lyemance energy saving top mount damper is designed to stop air loss through chimney and can save you on your energy bill.
It is a top mount chimney damper that is installed on top of your chimney flue and has a line that attaches to the side of the firebox to open and close it.
Fits Inside Flue Sizes 10" x 15 1/2" to 12 1/2" x 17 1/2" and has a Cross-Sectional Area of 106 sq. inches.
Free shipping within the continental United States