Rectangular Combination Fire Smoke Dampers

UL 555 1 ½ Hour, UL 555S Classified

Combination fire smoke damper with a 1½-hour fire rating can be used in walls, floors, or partitions as required in applicable building code(s). These dampers are UL 555 and UL 555S classified and meet the requirement of a combined fire smoke damper.

FSD-211

Class I leakage rating with 3V blades, pressure up to 6 in. wg, velocity to 2,000 fpm and temperature to 350°F.

VIEW FSD-211

FSD-211M

Class I leakage rating with 3V blades, pressure up to 4 in. wg, velocity to 2000 fpm and temperature to 250°F.

VIEW FSD-211M

FSD-212

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

VIEW FSD-212

FSD-213

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

VIEW FSD-213

FSD-311

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

VIEW FSD-311

FSD-311M

Class I leakage rating with airfoil blades, pressure up to 4 in. wg, velocity to 2000 fpm and temperature to 250°F.

VIEW FSD-311M

FSD-311V

Vertical blade with class I leakage rating, airfoil blades, pressure up to 4 in. wg, velocity to 2,000 fpm and temperature to 250°F.

VIEW FSD-311V

FSD-312

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

VIEW FSD-312

SEFSD-211

Severe environment with 316 stainless steel construction, 3V blade, class I leakage, pressure up to 6 in. wg, velocity to 2,000 fpm and temperature to 350°F.

VIEW SEFSD-211

SSFSD-211

Severe environment with 304 stainless steel construction, 3V blades, class I leakage, pressure up to 6 in. wg, velocity to 2000 fpm and temperature to 350°F.

VIEW SSFSD-211