13″X13″ Top Mount Chimney Damper with Hand Crank Controller | Thickened Chimney
Heavy-gauge & all-weather protection: Constructed from thickened galvanized steel for rust resistance and long-lasting durability. Maximize energy savings & air tight seal: Our 13″x13″ top mount chimney damper uses a fully enclosed sealing design to create an airtight barrier at the top of your flue.