*PLUMBERSSTOCK EXPERT* responded:
Hello! We are thankful for your interest in this Metal-Fab 8TGG36 Temp Guard chimney pipe. No, it shouldn't be. When the installation is done inside a chase or inside the envelope of the home or building, we use galvanized steel outer casing. When the installation is exposed outside the home or building and is not in a chase, we choose the stainless steel outer casing. For more technical information or assistance, please feel free to contact Metal-Fab at (800) 835-2830. If this is what you need, order it now by clicking on Add to Cart and entering your zip code. Thank for shopping at PlumbersStock.com!