Smoke leakage (S): The duct shall not Have got a leakage exceeding five m³/h for every 1 m² of internal surface area location. This shall be linked to the area place with the duct in the perforated plate to the end of your duct via the inlet nozzles. In the https://beauargvi.rimmablog.com/36013002/a-simple-key-for-grease-tight-extract-ductwork-unveiled