Midtherm 316L and 904L Flexible Stainless Steel Flue Pipe Posted on June 27, 2018July 11, 2018 by norfolkstoves Midtherm 904L and 316L Flexible Stainless Steel Flue Pipe from Midtherm. These are laser welded premium quality flues. Published by norfolkstoves View all posts by norfolkstoves
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