Section 092900 - USG Sheetrock® Brand Flexible Gypsum ...
Feature a noncombustible gypsum core that is encased in recycled face and back papers that form a high strength composite design. Comply with ASTM C1396, Standard Specification for Gypsum Board, for 1/4 in. (6.4 mm) gypsum wallboard. Underwriters Laboratories Inc. (UL) Classification as to surface-burning characteristics and noncombustibility