Static field route #153

What do I do when flex sagging between supports?

Flex Duct Connections & SupportsPolished core starter — flex/manufacturer check

Sagging flex needs support added or rerouted before it restricts airflow. Measure the span and support with a wide cradle/strap per project/manufacturer direction.

Open in Field Rescue Open category

Field checklist

Find the longest unsupported span.
Check for low belly/sag between supports.
Add approved support without crushing the flex.
Keep the run short and smooth.
Ask before leaving sag above ceiling.

Ask foreman

This flex is sagging between supports. Do you want another support added or the route shortened?

Do not

Do not leave a belly in flex because it is above ceiling.

Why it matters

Sag creates turbulence, condensation risk, noise, and lost airflow.

Search words: flex collar support support