There are plenty of accredited methods of earning a welded joint for grease exhaust ductwork. The choices will count on the code on your jurisdiction but should consist of flanged, telescoping, Bell form or overlapping joints. When the outlet terminates at a point that is not readily obtainable, it ought https://fire-resisting-ductwork-i77899.ampedpages.com/5-essential-elements-for-grease-tight-extract-ductwork-63877877