Smoke leakage (S): Failure of the criterion shall have occurred In the event the stream level in duct A over the take a look at exceeds 10 m³ / (m² h), linked to 20 °C and 1013 mbar, related to The interior area area with the duct In the furnace. https://fire-rated-insulation-for69012.newbigblog.com/43266481/fire-rated-ductworth-things-to-know-before-you-buy