American Gypsum Headquarters — Dallas, TX
American Gypsum Company — Albuquerque, NM | Bernalillo, NM | Duke, OK | Georgetown, SC | Gypsum, CO
American Gypsum is the fifth largest producer of gypsum wallboard in North America operating five gypsum plants with six production lines with an annual capacity of nearly four billion square feet.
Dallas Headquarters 
Wallboard Plants Fire and Sound Ratings are established at certified laboratories to the requirements of ASTM E119 or UL U263 for fire endurance and ASTM E90 for sound rated systems. The designs found on the following pages or at www.americangypsum.com/resources/design-library are summaries only, and building owners, design professionals, builders and contractors are strongly encouraged to review the listing or test report to ensure that each component of the design is being used and assembled properly on their projects. For details of a specific test, call 1-800-545-6302 ext. 5607.
In each UL fire rated design, approved wallboard panels are listed by their "UL Type" designations. Below are American Gypsum's "UL Types" and our wallboard panel or panels that correlate to each.
| UL Type | Panel Name |
|---|---|
| AGX-1 | 5/8" FireBloc® Type X Gypsum Wallboard 5/8" Exterior Sheathing 5/8" Exterior Soffit Gypsum Wallboard 5/8" M-Bloc® Type X with Mold & Moisture Resistance 5/8" M-Bloc® AR Type X Abuse with Mold & Moisture Resistance 5/8" M-Bloc® IR Type X Impact with Mold & Moisture Resistance |
| AG-C | 1/2" FireBloc® Type C Gypsum Wallboard 5/8" FireBloc® Type C Gypsum wallboard 5/8" FireBloc® Type C Soffit Gypsum Wallboard 5/8" M-Bloc® Type C with Mold & Moisture Resistance |
| LightRoc | 5/8" LightRoc® Type X Gypsum Wallboard |
| AG-S | 1" M-Bloc® Shaft Liner |
| M-Glass | 5/8" M-Glass® Exterior Gypsum Sheathing with Mold & Moisture Resistance 1" M-Glass® Shaft Liner with Mold & Moisture Resistance |
