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Heat Fab Essentials 8 Insul-Plug
The Insul-Plug blocks old, unused thimble holes in masonry chimneys. It provides a thermal break from combustibles and prevents downdrafts from entering the room. The Insul-Plug is constructed of a ceramic based fireproof insulating material. The black outside plate covers up to a 10 diameter hole. Simply insert it in the old thimble opening and tighten the expansion screw on the face of the Insul-Plug. The sides expand and create a tight fit inside the thimble opening. It can be removed by reversing the process. Features Type Insul-Plug. Specifications Overall Dimensions 8 (W). Adjustable 7 3/4 to 8 1/8 . Dimensions 24 x 20 x 

Price is $536.00

Price: $536.35