Layout & Coordination · Transition
Lay out transition length and orientation
Square Duct Installation — Size change
Task typeTransition
Tools / equipmentPlans, tape, square
How to install it
- 1
Mark large and small duct centerlines or flat side
- 2
verify taper direction, clearance, and fitting length.
Quality check
- Correct flat side
- no abrupt obstruction
Stop and verify
Stop if transition is being shortened in field