National Glass Association

Founded in 1948, the National Glass Association is the largest trade association representing the flat (architectural) glass industries. Based outside Washington, DC, and representing more than 3,000 member companies and locations, NGA offers certification, education and training, including MyGlassClass.com – a state-of-the-art online training resource. NGA publishes the industry’s leading trade magazines: Glass Magazine® and Window & Door®; and e-newsletters: e-glass weekly™ and WDweekly™. In addition, NGA serves the industry and general public with its Web sites: glass.org, GlassBuildAmerica.com, GlassMagazine.com, and WindowandDoor.com. NGA also hosts the industry’s premier annual trade event: GlassBuild America®: The Glass, Window & Door Expo. For more information about NGA, visit www.glass.org.

Window & Door Dealers Alliance

The Window & Door Dealers Alliance (WDDA) represents the interests of retail, wholesale, and installing dealers of new and replacement windows, doors, skylights, and related building products. The WDDA is the only national business organization advancing the interests of independent window and door dealers. The WDDA is an initiative of the National Glass Association. More information can be found at www.wddalliance.org.

Glass Association of North America

Based in Topeka, KS, the Glass Association of North America (GANA) is made up of seven divisions: Building Envelope Contractors, Decorative, Flat Glass Manufacturing, Insulating, Laminating, Mirror and Tempering. GANA offers a wide variety of publications for the flat glass industry, including the GANA Glazing Manual, Laminated Glazing Reference Manual and the Project Managers Reference Manual. Additionally, GANA sponsors the annual Building Envelope Contractors (BEC) Conference, as well as Glass Week, and provides a series of educational seminars and programs. For more information on GANA, visit www.glasswebsite.com.

American Architectural Manufacturers Association

Based in Schaumburg, IL, the American Architectural Manufacturers Association (AAMA) is the leading trade association for the North American fenestration industry. AAMA's member companies include manufacturers and suppliers of windows, doors, skylights, curtain wall, storefronts and related materials and components for the residential and commercial markets. Focusing on both technical and marketing services, AAMA's activities include standards development, product certification, market research and educational programs for the fenestration industry. For more information on AAMA, visit www.aamanet.org.

Insulating Glass Manufacturers Alliance

Based both in the United States and Canada, the Insulating Glass Manufacturers Alliance is a North American association of insulating glass manufacturers, suppliers of component materials, and other industry-related professionals. IGMA is dedicated to upgrading product performance by promoting awareness of technological developments in the industry through educational events, technical publications and certification. For more information on IGMA, visit www.igmaonline.org.