As an Amazon Associate I earn from qualifying purchases. How do you install a spin-in take-off? Trace the spin-in on the duct, punch a starter hole with the pointy end of your hammer, and cut about a quarter inch inside your line with snips. Straddle the open slot over the cutout and rotate clockwise a…
What’s the difference between a snap lock and a Pittsburgh seam? Snap lock is the standard seam on most commercial rectangular duct. Themachine forms a female edge with a turned down lip and a male edge withpunched notches. Push them together and the notches catch. Pittsburgh isfor the pieces that cannot go through the snap…
As an Amazon Associate I earn from qualifying purchases. What is a high efficiency take-off and when do you use one? A high efficiency take-off is an angled tap that feeds a branch off a trunk line. You will only see one when the spec calls for it — they cost more and take longer…
The s-cleat slides onto two opposing edges and holds the load from one duct to the other. Drives slide over the other two bent edges and get bent over at the corners to keep the joint tight. They have a push and pull reaction. S-cleats alone do not close a joint. Just starting out? Here…