Grease duct joints are held collectively through shaped V clamps and sealed with 3M Fire Barrier 2000+. The least duct thickness is outlined by whatever code jurisdiction that the venture is located in. Under are two code references connected with the demanded thickness and materials variety for grease ducts. ROCKWOOL https://fireresistingductworkinsu90112.full-design.com/the-best-side-of-grease-tight-extract-ductwork-79197330