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Insul-Plug Black Masonry Chimney Thimble Hole Plug - 8-Inch Diameter - 810108
- Blocks unused thimble holes in masonry chimneys
- Made with completely fireproof materials
- Plate covers 10" hole
- Fits 7.75" to 8 1/8" diameter opening
Product Details
Part Number: 810108 eFireplaceStore Item Number: CPF-34250 Features
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Customer Questions & Answers
6 Questions &
7 Answers
Dave J.
from Hebron, CT asked:
March 2, 2020
There must be some reason why I would choose this product to block an unused thimble (flue) rather than an end cap?
1 Answer
The plug adapts to a range of sizes, you insert the plug then tighten the center screw which expands the plug and creates a tight draft-proof fit.
Submitted by:
Kathy O.
on March 3, 2020
Rick W.
from Ellenville, NY asked:
January 23, 2020
I converted my wood-burning fireplace to ventless propane. The damper in the fireplace is broken and the previous owners installed a cap. Can I use this to seal the hole left by the damper to keep heat from rising into the closed chimney?
1 Answer
We do not recommend using this cover in your application because this cover is only meant for use over thimble openings in walls, not inside a firebox.
Submitted by:
Tyler M. - NFI Master Hearth Professional
on January 23, 2020
Stephanie
from Maine asked:
December 9, 2019
We are purchasing a home that currently has two woodstoves exhausting into one chimney flue. Our homeowner's insurance says that one needs to be removed and capped before they will insure the property. We are electing to keep the woodstove on the lower level (basement) and remove the one on the main floor. Would this product adequately seal the thimble where the main floor wood stove is removed? Would we still be able to use the lower woodstove with this in place?
1 Answer
This would indeed work for your application. It uses the center screw to expand and make a seal in the thimble.
Submitted by:
Brennan W.
on December 10, 2019
Wendy G.
from Colorado asked:
October 3, 2019
My hole coming through the wall is an insulated 12” dia pipe and I need to close it off. Do you have anything that will fit this?
1 Answer
We apologize but we do not have a flue cover that large.
Submitted by:
Kathy O.
on October 3, 2019
Peter
from Gardner, MA asked:
April 25, 2018
On the front of the Insul-plug, what is the screw for? What are the installation instructions?
2 Answers
The screw attaches the actual pan cover to the 'plug" . It fits tight into the pipe, exactly like a drain plug for a bathtub.
Submitted by:
Owen O.
on April 25, 2018
Since the plug adapts to a small range of sizes, you insert the plug then tighten the center screw, expanding the plug and creating a snug draft-proof fit.
Submitted by:
Roger
on March 23, 2019
from MA
Ann
from Plymouth, MA asked:
August 22, 2017
If I am disconnecting my wood stove, can I use this product to plug the hole in the brick chimney?
1 Answer
This can indeed be used for that purpose.
Submitted by:
Brennan W.
on August 22, 2017
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