Aluminum B-SVA   Steel B-SVG   Acoustical STC45   Description Sizes CSI Specs CAD Drawings Competition Comparisons STC45 | Smoke Vents It is necessary to have Adobe Acrobat Reader to view a pdf. If you don't have Acrobat Reader, you can download the software free from Adobe. STC45/36 SERIES Plans .DWG .DXF .PDF STC36 Series STC36 Series STC36 Series STC45 Series STC45 Series STC45 Series D:\Sites\LocalUser\babcock-davis\content\0403.htm