Black sound lining is installed inside the return air duct assembly to reduce noise transmission. The duct maintains a minimum eight-inch dimension and a six-inch clearance to light fixtures. Specifications govern additional seismic bracing requirements for the suspended duct installation.
BLACK SOUND LINING 6" TO CLEAR LIGHTS SEE SPECIFICATIONS FOR SEISMIC BRACING RETURN AIR GRILLE REQUIREMENTS 8" MIN. 12"
Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.
Start membership