Steel-Framed Wall

25-gauge (18 mils) resilient channels 24” (610 mm) o.c. attached horizontally to one side of 3-1/2” (89 mm) 20-gauge (30 mils) steel studs 24” (610 mm) o.c. with one 1/2” (13 mm) Type S-12 drywall screw at each stud. Base Layer: 1/2” (12.7 mm) ToughRock® Fireguard C® or 1/2” (12.7 mm) DensArmor Plus® Fireguard C® gypsum board applied horizontally to channels with 1” (25 mm) Type S drywall screws 24” (610 mm) o.c. Face Layer: 1/2” (12.7 mm) ToughRock Fireguard C or 1/2” (12.7 mm) DensArmor Plus Fireguard C gypsum board applied horizontally to channels with 1-5/8” (41 mm) Type S drywall screws 12” (305 mm) o.c. 3” (76 mm) mineral fiber insulation, friction fit in stud space. Opposite Side: One layer 1/2” (12.7 mm) ToughRock Fireguard C or 1/2” (12.7 mm) DensArmor Plus Fireguard C gypsum board applied vertically to studs with 1” (25 mm) Type S-12 drywall screws 12” (305 mm) o.c. Joints staggered 24” (610 mm) each layer and side.

Hourly Rating: 2-hour
STC Rating:
Fire Test Reference: UL U453,cUL U453,GA WP 15202
Sound Test Reference:
Approved for Assembly:
ToughRock® Fireguard C® Products
DensArmor Plus® Fireguard C® Products