Small rectangular TDC branch

Before you start

• Know which way the air is going before you cut anything.
• A branch installed b...
• Stage the needed tools and materials before lifting the section: Takeoff or transition fitting, TDC or slip-on flange hardware, drill and hole....

Lay it out

1. Confirm branch location and airflow direction against the drawing, and mar...

Set and support it

1. Set and verify the approved supports before the connection is closed. Keep the joint from carrying the weight of the duct or fitting.
2. Use the approved support method for this condition: Strap, rod/strut or approved branch support.

Make the connection

1. 1

   Confirm branch location and airflow direction against the drawing, and mar...