The GA is the technical center for the application, finishing, and overall use of gypsum panel products. In addition to responding to technical inquiries, the Association maintains a library of technical publications, most of which are free to architects, specifiers, builders, contractors and code officials. The code-referenced GA-600 Fire Resistance and Sound Control Design Manual, now in its 23rd edition, is the GA’s flagship publication. The vision of the Gypsum Association (GA), a not-for-profit trade association founded in 1930, is to ensure a future where gypsum products are recognized and relied upon as being essential to the health, safety, comfort, sustainability and resilience of our buildings and quality of life. In support of this vision, the Association’s mission is to promote the use of gypsum products while advancing the development, growth, and general welfare of the gypsum product industry on behalf of its member companies. Members include the active gypsum board (panel) manufacturers in the United States, Canada and Mexico. To be eligible for membership in the Association, a firm or corporation must calcine gypsum and manufacture gypsum board under the provisions of ASTM Standard C1396.