Static field route #439

What do I do when internal liner loose causing obstruction?

Airflow/TAB Impacts From InstallationV136 field-polished — distinct TAB/airflow answer

Loose internal liner is a hidden airflow blockage. Stop before sealing/covering and get direction on repair or replacement.

Field checklist

The internal liner looks loose/blocking the duct at [location]. Do you want this repaired, replaced, or inspected before we close it?

Do not shove loose liner back and cover it without approval.

Loose liner can reduce airflow, shed material, create noise, and fail inspection.

Search words: internal liner loose duct liner obstruction airflow