This is the #1 selling damper for over 18 Years! The Sealtight original top sealing damper reduces heat and air conditioning loss through the chimney by as much as 90%, and eliminates down drafts when the fireplace is not in use. Sealtight dampers seal out snow, rain and animals and mount easily on the top of flue tile with silicone sealant (included). A 32′ stainless steel cable extends down the flue to a bracket fastened on the side of the firebox. A simple tug on the cable and the damper opens easily.
A 50′ extension cable is available. Sealtight dampers are made of cast aluminum and come in six sizes. Easy instructions and all hardware pieces are included.