Sheet Metal Worker how-to
How to Install a Rectangular Duct Run
Straight, well-supported duct with sealed joints delivers air efficiently.
Quick answer
Straight, well-supported duct with sealed joints delivers air efficiently. In short: lay; install; lift, then complete the remaining steps below.
Step by step
Lay out the duct centerline and hanger locations from the drawings.
Install anchors and hangers at the spacing the specs require.
Lift sections into place with a duct jack.
Connect joints with S-and-drive cleats or flanged connections.
Seal joints with mastic or tape as specified.
Check alignment and adjust hangers before moving on.
Safety reminders for sheet metal workers
- Wear cut-resistant gloves and handle metal edges carefully
- Use hearing and eye protection around machinery
- Follow ladder, lift and fall protection rules
- Lock out machines before clearing jams or changing tooling
Key terms
Gauge · Pattern layout · Brake · Pittsburgh lock · S-and-drive · Takeoff: see the full sheet metal worker glossary.