What's the thickness of a fire-rated duct? A fire-rated duct really should be produced with one skin, possessing a total thickness not exceeding 2mm. This measurement consists of the intumescent coating, which is important for maximizing fire resistance. In accordance with the World Well being Organisation (WHO), about 180,000 deaths https://fire-resisting-ductwork-s34556.luwebs.com/40130022/5-essential-elements-for-fire-resistant-ductwork-manufacturers