Those turning vanes to direct airflow can be made of ,fire resistant, fabric that absorbs sound. Or panels of acoustic ceiling.
Bill D.
First best photo below
https://www.acousticalsurfaces.com/e...ee_hangbaf.htm
Those turning vanes to direct airflow can be made of ,fire resistant, fabric that absorbs sound. Or panels of acoustic ceiling.
Bill D.
First best photo below
https://www.acousticalsurfaces.com/e...ee_hangbaf.htm