NCC 2019: The latest iteration of the National Construction Code, have made some substantial changes to duct air tightness requirements. Distribution of air throughout our large commercial/industrial buildings is actually quite important, and there are many ways that we attempt to channel air around these buildings, speedwall risers, blockwork riders and even precast concrete. In this video we talk about these changes, and our capability to test large duct systems. #ductairtightnesstesting #ncc2019 #commercialducttesting

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