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  • Oct 5, 2013, 04:36 PM
    Cris Young
    Can nashua 324 tape be used to seal metal ducts and plenums outdoor on a roof top
    Can nashua 324 metal tape be used to seal ducts and plenums outdoors on a roof top?
  • Oct 5, 2013, 05:40 PM
    Grady White
    They should be sealed with mastic but in a pinch 324 tape will work at least for a while.

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