Combination Fire/Smoke Dampers
Dampers meet both the specific test standards for fire and smoke situations are rated as combination fire and smoke dampers. A combination fire/smoke damper can close when heat from a fire is detected or when smoke is detected by a smoke detector.
MODEL FSD-3V-211
U.L. 555S listed and labeled as
a Leakage Class I rated (smoke)
damper with airflow in both
directions. Class I provides for a
maximum leakage of 4cfm per sq.
ft. at 1.0” static pressure and a
maximum of 8cfm per sq. ft. at
4.0” static pressure.
8˝ w x 6˝ h
Maximum UL Listed Size
Single Section: 36˝ w x 48˝ h
Multiple Assembly
Vert: 108˝ w x 96˝ h
Horz: 72˝ w x 96˝ h
MODEL FSD-3V-212
U.L. 555S listed and labeled as
a Leakage Class II rated (smoke)
damper with airflow in both
directions. Class II provides for a
maximum leakage of 10cfm per
sq. ft. at 1.0” static pressure and
a maximum of 20cfm per sq. ft. at
4.0” static pressure.
6˝ w x 6˝ h
Maximum UL Listed Size
Single Section: 36˝ w x 48˝ h
Multiple Assembly
Vert: 108˝ w x 96˝ h
Horz: 72˝ w x 96˝ h4″ W.C.
MODEL FSD-3V-231
U.L. 555S listed and labeled as
a Leakage Class I rated (smoke)
damper with airflow in both
directions. Class I provides for a
maximum leakage of 4cfm per sq.
ft. at 1.0” static pressure and a
maximum of 8cfm per sq. ft. at
4.0” static pressure.
8˝ w x 6˝ h
Maximum UL Listed Size
Single Section: 36˝ w x 36˝ h
Multiple Assembly
Vert: 72˝ w x 36˝ h
Horz: 72˝ w x 36˝ h
MODEL FSD-3V-232
U.L. 555S listed and labeled as
a Leakage Class II rated (smoke)
damper with airflow in both
directions. Class II provides for a
maximum leakage of 10cfm per
sq. ft. at 1.0” static pressure and
a maximum of 20cfm per sq. ft. at
4.0” static pressure.
6˝ w x 6˝ h
Maximum UL Listed Size
Single Section: 36˝ w x 48˝ h
Multiple Assembly
Vert: 72˝ w x 48˝ h
Horz: 72˝ w x 48˝ h
CERTIFICATIONS
DuroDyne Fire Dampers are UL 555 approved and approved by the Standards and Appeals for use in New York City. Cal. 291-80-SA. Meets National Fire Protection Association – NFPA 90A.
