Greenheck Fan FSD-211 is a combination fire smoke damper with 3V style blades, designed for both fire and smoke control applications. It features a UL 555 Fire Resistance Rating of 11⁄2 Hours and a UL 555S Leakage Rating of Class I. The FSD-211 is suitable for vertical or horizontal installation and is rated for airflow and leakage in either direction. It has a maximum velocity rating of 2000 fpm (10.2 m/s) and a maximum pressure rating of 4 in. wg (1 kPa). The damper is constructed with a galvanized steel frame, 16 ga. (1.5mm) galvanized steel blades, and extruded silicone rubber blade seals.
Greenheck Fan FSD-211 is a combination fire smoke damper with 3V style blades, designed for both fire and smoke control applications. It features a UL 555 Fire Resistance Rating of 11⁄2 Hours and a UL 555S Leakage Rating of Class I. The FSD-211 is suitable for vertical or horizontal installation and is rated for airflow and leakage in either direction. It has a maximum velocity rating of 2000 fpm (10.2 m/s) and a maximum pressure rating of 4 in. wg (1 kPa). The damper is constructed with a galvanized steel frame, 16 ga. (1.5mm) galvanized steel blades, and extruded silicone rubber blade seals.
Greenheck Fan FSD-211 is a combination fire smoke damper with 3V style blades, designed for both fire and smoke control applications. It features a UL 555 Fire Resistance Rating of 11⁄2 Hours and a UL 555S Leakage Rating of Class I. The FSD-211 is suitable for vertical or horizontal installation and is rated for airflow and leakage in either direction. It has a maximum velocity rating of 2000 fpm (10.2 m/s) and a maximum pressure rating of 4 in. wg (1 kPa). The damper is constructed with a galvanized steel frame, 16 ga. (1.5mm) galvanized steel blades, and extruded silicone rubber blade seals.
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