Hi thanks for the reply. So in this case, instead of putting a damper do i need to wrap the duct with a fire barrier duct wrap? Or do what the code states construct the duct with aluminum gage 26 or galvanized gage 30?
Hi everyone:
im new to this forum and have a question regarding the dryer exhaust duct penetrate the fire rated exterior wall of the building. By NYC code if the duct penetrates a fire rated wall it requires a fire damper. However, the code states that fire damper, combination fire/smoke damper...
