Smoke leakage (S): Failure of the criterion shall have occurred Should the move fee in duct A over the check exceeds 10 m³ / (m² h), related to twenty °C and 1013 mbar, connected to The interior surface area location from the duct In the furnace. The BIP E-newsletter is https://fire-rated-ductworth67788.blogthisbiz.com/43874774/the-definitive-guide-to-fire-rated-insulation-for-ductworth