Can I run my 8 inch duct for my down draft range fan in the same trench as my sewer line?

  • Can you elaborate on the setup? First, is this outdoors (otherwise, what is this "trench")? Why do you think this would be a problem? – Hari Ganti Jan 18 '18 at 0:41
  • Voting to close. Questions remain unanswered and OP hasn't been back. – isherwood Jun 5 at 16:13

As long as it is made from PVC or ABS material. The typical metal ducting could not hold the weight and would collapse. Also the metal would allow water in. Additionally, it would rust through in short order.

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