Fire-rated ductworks are needed to carry out the smoke outside the creating, even using supporter assisted units. If a smoke extraction ductwork is wholly contained within a fire compartment, it should be able to a minimum of resisting the predicted smoke temperatures created throughout the event of the fire. The https://grease-tight-extract-duct01223.blogocial.com/everything-about-fire-resisting-ductwork-insulation-72741511