Smoke leakage (S): The duct shall not Possess a leakage exceeding five m³/h for every 1 m² of inside floor area. This shall be connected to the area space on the duct from your perforated plate to the top with the duct via the inlet nozzles. If your outlet terminates https://fire-resisting-ductwork-i57788.blogthisbiz.com/43958981/an-unbiased-view-of-fire-resisting-ductwork-insulation