Model FSD-181V

1-1/2 - Combination Fire Smoke Damper
Vertical Airfoil Blade

The FSD-181V combination fire smoke damper employs vertical airfoil blades for point-of-origin control of fire and smoke in static and dynamic smoke management systems. The FSD-181V is qualified to 2,000 ft/min (10.2 m/s) and 4 in.wg. (1.0 kPa) and may be installed in vertical walls or partitions with fire resistance ratings up to 2 hours.

Standard Construction

Frame: 5" x 1" (127 x 25) galvanized steel hat channel with inerlocking corner gusset. Equivalent to 13 ga. (2.4) channel frame. Low profile head and sill are used on sizes less than 13" (330) high.
Blades: 6" x 14 ga. (152 x 2.0) galvanized steel - vertical airfoil.
Sleeve: 16" x 20 ga. (406 x 1.0) galvanized steel.
Axles: 1/2" (13) diameter plated steel hex.
Linkage: Concealed in frame.
Bearings: Stainless steel oilite, sleeve-type.
Seals: Silicone blade edge seals inegrally rolled and mechanically fastened to blades. Flexible metal jamb seals.
Actuator: 120 VAC, power-open, spring-close, external mount. View Actuators.
Fire Closure Device: HS-10 (electric actuators)
Fire Closure Temperature: 165oF (75oC)
Minimum Size: 8" x 8" (203 x 203)
Maximum SizeSingle Section: 48" x 32" (1219 x 813)
                           Multiple Section: 96" x 32" (2438 x 813)


UL 555 Fire Resistance Rating: 1-1/2 hour (vertical)
UL 555S Leakage Class: 1 
UL HNLJ.V-5: Ventilation Duct Assemblies
Maximum Temperature: 250oF (121oC)

UL 555 and 555S Listing: R14981
CSFM Listing: 3225-1404:107 and 3230-1404:108
New York City MEA Listing: 295-98-E
Meets NFPA Standards: 90A, 92A, 92B and 101
Meets Building Code Standards: IBC, NBC, NFPA, SBC and UBC