How To Make A Sheet Metal Duct Takeoff

Use one hand to keep the two edges close and the other to apply downward pressure.

How to make a sheet metal duct takeoff.

Cut a length of duct equal to l plus 2 inches using tin snips. Step 10 bend the metal at 90 degrees. Called sheet metal workers. They are manufactured from the highest quality galvanized sheet metal and to our exacting standards.

You need the extra length to create a 1 inch flange on either end for connecting the duct. In fact sheet metal use in hvac is greater than all other materials combined. It fits a variety of duct board thicknesses for convenience. Arrange the offset in the same orientation as the installed duct and mark the offset side which is the one closest to the obstacle.

Assemble the metal ducting like a zipper when assembling pipe start at one end and work the seam together like a zipper. Ductboard starting collar comes with sheet metal screws. Use your leg a workbench or the ground to support the back side of the pipe. The master flow 4 in.

Push the metal through until the 1 4 inch marks are lined up with the clamp edge and clamp the edge down on the metal. 3 dovetail duct start collar. You can t get tees at the local home center. Round takeoffs range from those using scrap sheet metal pipe with tabs cut on one end to those using a traditional tap in side collar or sheet metal elbow.

The steel and aluminum used for ductwork is a high achiever in the 21st century move toward sustainable buildings because of the high recycling rates and cleanliness. Start collars are cosidered best practice and most economical way for starting a new duct run from your supply air or return plenum. 4001 mark iv parkway fort worth tx 76106 phone. This provides a transition from duct board plenums internally lined plenums or insulated register boxes.

The one thing they all have in common is the opening mounted to the duct is also the same size as the branch duct it feeds.