Terminal unit acoustical lining details are given in this 2D AutoCAD DWG drawing file. Internal lining, electric duct heater, flexible connection, galvanized channel of 0.8mm thickness, 25mm thick acoustical duct lining fiber glass, SAD and RAD is mentioned in this drawing model. Download the 2D AutoCAD DWG drawing file. Thank you for downloading 2D AutoCAD DWG drawing file and other CAD program files from our website.