SIZES, AND STANDARDS (GA-223-04) PRODUCT DEFINED USE ASTM STANDARD†† INSTALLATION TYPE††† 1. Gypsum Wallboard Interior Walls & Ceilings C 1396, C 36 GA-216 1, 2, 3 2. Gypsum Ceiling Board Interior Ceilings C 1396, C 1395 GA-216 1, 2, 3 3. Fiber Reinforced Gypsum Panels Interior & Exterior Walls & Ceilings, & Tile Base