First move
Stop and confirm flex is allowed for this run and that the route will not kink, sag, crush, or choke airflow.
Check before moving
- Flex size and collar size
- Run length and route
- Sag/support
- Bend radius/kinks
- Inner liner connection/seal
- Outer jacket/vapor barrier
Photo ID to collect
- Collar connection photo
- Full flex route photo
- Support/sag photo
- Diffuser/box photo
Ask this
“This flex run is getting long/kinked/crushed. Do you want a different route or hard duct before we connect it?”
Do not
Do not use flex as a lazy reroute or tie only the outer jacket.