Part Number: 810106
eFireplaceStore Item Number: CPF-34200
Don't let old and unused thimble holes affect the efficiency of your masonry chimney. Use Insul-Plug Black Masonry Chimney Thimble Hole Plugs to seal any holes spanning up to ten inches in diameter.
I am looking to plug a hole in the back of my chimney that backs up to another room. Is this the right part to do that?