Call Toll Free : 1-800-251-8824

Chimney Plugs

Insul-Plug Insulated Chimney Plug

6" Chimney Plug


8" Chimnry Plug


Blocks old, unused thimble holes in masonry chimneys. Provides a thermal break from combustibles and prevents downdrafts from entering the room.

Constructed of a ceramic based fireproof insulating material. The black outside plate covers up to a 10" diameter hole.

Installs easily, simply insert the plug into the old thimble opening and tighten the expansion screw on the face of the plug. The side expand and create a tight fit inside the thimble opening. To remove simply reverse the process.

6" & 8"
Quick and easy install
6" plug adjusts from 5 3/4" to 6 1/8"
8" plug adjusts from 7 3/4" to 8 1/8"

Customer Reviews
Click here to add a review or comment
There are no comments to display