double walled

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  1. Jotel me this

    Are elbows also double walled?

    I have 2-30 degree elbows in the attic. are they double walled as well? id assume so, just asking out of curiosity how the manufacturers would even make such a thing.
  2. G

    Install Questions

    Hi all, I ordered a Vermont Castings Merrimack and double checked all dimensions and clearances before purchasing. I'm having a handyman who has done quite a bit of quality work on our home do the install. I just want to make sure I know enough about the install myself to make sure he is...