Exactly what is the thickness of the fire-rated duct? A fire-rated duct should be constructed with only one pores and skin, possessing a total thickness not exceeding 2mm. This measurement consists of the intumescent coating, which is important for enhancing fire resistance. In accordance with the World Well being Organisation https://fireratedductwork67889.popup-blog.com/38240623/5-essential-elements-for-fire-resistant-ductwork-manufacturers