Exactly what is the thickness of the fire-rated duct? A fire-rated duct ought to be built with just one pores and skin, aquiring a overall thickness not exceeding 2mm. This measurement includes the intumescent coating, which is important for boosting fire resistance. In accordance with the Environment Health Organisation (WHO), https://josuevkyma.thekatyblog.com/37807515/fire-rated-ductwork-secrets