Aegis
http://www.aegis.com
Metal Framing, LLC
Mitek Industries, Inc.
http://www.mii.com
'Ultra-Span' Truss Systems
Light Gauge Steel Engineers Association
http://www.lgsea.com
Engineering Trade Association
Simpson Strong-Tie Company, Inc.
http://www.strongtie.com
Connection Systems
Underwriters Laboratories
http://www.ul.com
Independent Testing Laboratories
Steel Stud Manufacturers Association
Steel Framing Alliance
MarinoWare
