Mechanical · IMC 2021 §603.7
Duct Penetrations and Dwelling-Garage Separation Ducts
Section of a duct through the wall between a dwelling and a private garage: continuous, 0.0187 in (No. 26 gage) sheet steel, no openings into the garage, and no dampers unless IBC Chapter 7 requires them.. Referenced to IMC 2021 §603.7.
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