Scan QR code or get instant email to install app
Question:
Fire dampers are not required at penetrations of shafts where the steel exhaust subducts extend at least _______ vertically in exhaust shafts provided that there is a continuous airflow upward to the outdoors:
A
22 inches
explanation
Take more free practice tests for other PASSEMALL topics with our hvac test now!
Related Information
Comments