Utilize to uncoated stonewool boards Uninsulated ventilation duct assemblies are supposed to be used in environments in which the clearance to combustible elements and combustible assemblies is at the least 18 inches. Ductwork runs all over a lot of big properties, providing and eradicating equally cold and hot air to https://fire-rated-ductworth24455.tokka-blog.com/37219568/the-basic-principles-of-fire-rated-insulation-for-ductworth