What do I do when not supporting flex near bend?
Flex Duct Connections & SupportsPolished core starter — flex/manufacturer check
Support flex near bends so the bend does not become a kink or sag point.
Field checklist
- Locate bends near collar/boot/obstruction.
- Add support before and/or after the bend as directed.
- Keep bend smooth and round.
- Avoid cinching.
- Ask if the bend is too tight to support correctly.
Ask foreman
This bend is unsupported and starting to kink. Do you want support added near the bend?
Do not
Do not leave a bend hanging by the liner/collar.
Why it matters
Unsupported bends collapse and restrict airflow faster than straight runs.
Search words: flex collar support bend support