Pellet stove insert chimney vent Fabric ? Fireproof wool ?

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LobsterParty

Member
Jan 24, 2022
37
Boston
I just removed my old pellet stove. And I will be installing a different similar pellet stove insert.

This flame retardant material was around the four inch stove pipe liner, tied together with mechanic wire.

It fell apart into pieces when I took it off. I think I can reuse it. Don't know if I even need it?

Where can I buy some and what is it called ?

Thank you
 

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It was located at the very bottom of the 30 foot flex pipe. When it connected into the frame for the 4" exhaust.

Is this needed ? Does home Depot or Walmart sell this stuff ?