Out of Wall Fire Smoke Dampers

Combination Fire Smoke Dampers with a 1½ hour fire rating – UL 555 and UL 555S Classified

Combination fire and smoke dampers are used in heating, ventilation, and air conditioning (HVAC) to protect duct and air transfer opening penetrations through fire-smoke rated construction (walls and floors).

GFSD-211

Class I leakage rated with 3V blades, pressure up to 4 in. wg, velocity to 2000 fpm and temperature to 350°F.

VIEW GFSD-211

OFSD-211

Class I leakage rated with 3V blades, pressure up to 6 in. wg, velocity to 2000 fpm and temperature to 350°F.

VIEW OFSD-211

OFSD-212

Class II leakage rated with 3V blades, pressure up to 6 in. wg, velocity to 2000 fpm and temperature to 350°F.

VIEW OFSD-212

OFSD-311

Class I leakage rated with airfoil blades, pressure up to 8 in. wg, velocity to 4000 fpm and temperature to 350°F.

VIEW OFSD-311