Manufacturer:Insul-Plug Part Number: 810108 eFireplaceStore Item Number: CPF-34250
Features
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
If you have any experience with fireplaces, then no doubt you know of the paramount importance of maintaining a safe chimney. If you've got old or damaged components in your chimney ventilation system, then there's a big problem that needs to be addressed immediately. Don't let old or unused thimble holes, for instance, affect the safety of efficiency of your chimney. This Insul-Plug Masonry Chimney Thimble Hole Plug will seal any holes spanning up to ten inches in diameter. It's made with completely fireproof materials, ensuring the safety of your chimney system.
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
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.
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
Most Helpful Answer
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.