Fire-rated ductworks are necessary to conduct the smoke outside the house the constructing, even making use of fan assisted devices. If a smoke extraction ductwork is wholly contained in a fire compartment, it should be effective at at the very least resisting the expected smoke temperatures produced during the event https://andersonlbsgu.idblogz.com/37471764/5-essential-elements-for-grease-tight-extract-ductwork