Available in 3V blades for use in systems up to 2000 fpm and 4 in. wg or airfoil blades for use in systems up to 3000 fpm and 4 in. wg. All models have been tested and are labeled in accordance with UL 555 and UL 555S. Fire resistance ratings of either 1 1/2 or 3 hours and leakage class ratings of I, II, or III. We offer Severe Environment Dampers and Marine Dampers in many models.
Model FSD/FSDR: Traditional Fire Smoke
Classified to UL 555 and UL 555S and must be mounted within the plane of the wall or floor. Rated for airflow and leakage in either direction. Galvanized and 304 stainless steel construction available. Electric and pneumatic
actuators
Classified to UL 555 and UL 555S and must be mounted within the plane of the wall or floor. Rated for airflow and leakage in either direction. Galvanized and 304 stainless steel construction available. Electric and pneumatic
actuators
Model CFSD: Corridor Fire Smoke
Models each with three mounting configurations available. 1 hour Corridor Fire Resistance Rating and UL 555S Leakage Rating. Can be installed horizontally behind grilles and diffusers in corridor penetrations with ratings for airflow and leakage in either direction. Galvanized and 304 stainless steel construction available. Electric and pneumatic actuators.
Models each with three mounting configurations available. 1 hour Corridor Fire Resistance Rating and UL 555S Leakage Rating. Can be installed horizontally behind grilles and diffusers in corridor penetrations with ratings for airflow and leakage in either direction. Galvanized and 304 stainless steel construction available. Electric and pneumatic actuators.
Model OFSD: Out Of Wall Fire Smoke
Classified to UL 555 and UL 555S and can be installed outside of the plane of the wall or floor. This allows the actuator to be mounted internally with convenient access to the damper, actuator, and heat responsive device through the grille. The entire installation can be done from the grille side of the opening. Rated for airflow and leakage in either direction. Electric and pneumatic actuators.
Classified to UL 555 and UL 555S and can be installed outside of the plane of the wall or floor. This allows the actuator to be mounted internally with convenient access to the damper, actuator, and heat responsive device through the grille. The entire installation can be done from the grille side of the opening. Rated for airflow and leakage in either direction. Electric and pneumatic actuators.