Grease duct joints are held jointly by the use of formed V clamps and sealed with 3M Fire Barrier 2000+. Grease duct is possibly routed by way of a fire rated shaft enclosure or wrapped with the accepted fire insulating blanket that enables for zero clearances, such as that created https://fireresistingductworkinsu91122.like-blogs.com/36565692/everything-about-grease-tight-extract-ductwork