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Misc. Chimney Supplies > Insul-Plug 8" Diameter
Insul-Plug 8" Diameter

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Price: $181.13
Prod. Code: 34250

The Insul-Plug insulated chimney plug blocks old, unused thimble holes in masonry chimneys. It provides a thermal break from combustibles and prevents downdrafts from coming through the chimney.


The Insul-Plug is constructed of a ceramic based fireproof insulating material. The outer black plate covers up to a 10" diameter opening.

Simply insert it in the unused thimble opening and tighten the expansion screw on the front. The sides expand creating a tight fit in side the opening.

8" Insul-plug adjusts from 7 3/4" to 8 1/8".

Discount Chimney Supply Inc. (2011)