Standard Test Methods for Fire Resistive Metallic HVAC Duct Systems
< div style=" text-align:left " class=" NoteLevel1" >
< span class=" note cdone" style=" text-transform: uppercase " > Note 1:< / span> & #x00a0 < span class=" note cdone" > Use of the standard designation ISO 6944 refers to both ISO 6944:1985 and ISO 6944-1:2008.< / span>
< span class=" note cdone" style=" text-transform: uppercase " > Note 2:< / span> & #x00a0 < span class=" note cdone" > The intent of these test methods is to provide authorities having jurisdiction a means to evaluate the fire performance of HVAC duct systems to enable their application and use.< / span>
< span class=" note cdone" style=" text-transform: uppercase " > Note 3:< / span> & #x00a0 < span class=" note cdone" > Unprotected openings are openings that are not protected by fire dampers.< / span>
View in