Smoke leakage (S): The duct shall not Possess a leakage exceeding 5 m³/h for every 1 m² of inner floor place. This shall be linked to the floor space of the duct through the perforated plate to the end of your duct via the inlet nozzles. Massive access panels are https://greasetightextractductwor79901.thechapblog.com/35896318/the-basic-principles-of-grease-tight-extract-ductwork