In Plain Language

Fire dampers, devices that automatically close a duct penetration during a fire, must conform to the requirements of Subsection 3.1.8, the Code's general fire separation and closure provisions.

This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.