1/2” (12.7 mm) ToughRock® Fireguard C® or 1/2” (12.7 mm) DensArmor Plus® Fireguard C® gypsum panels applied vertically or horizontally to each side of 2” x 4” wood studs 16” (406 mm) o.c. with 1-5/8” (41 mm) cement coated nails spaced 7” (178 mm) o.c. Joints staggered.
