Grease duct joints are held jointly by way of shaped V clamps and sealed with 3M Fire Barrier 2000+. Reduction in cross-area: The internal Proportions (width and peak for rectangular ducts, diameter for round ducts) in the smoke extracting ductwork shall not lower by in excess of ten% in the https://sergioxpesh.develop-blog.com/44442632/fire-resisting-ductwork-insulation-an-overview