Model FD4D-C

1-1/2 Hour - Dynamic Rated - Fire Damper
Curtain Style Blade

The FD4D-C fire damper employs out of the airstream frame and curtain style blades for point-of-origin control of fire in static and dynamic HVAC systems. The FD4D-C is qualified to 4,000 ft/min (20.3 m/s) and 4 in.wg. (1.0 kPa) and may be installed in vertical walls or partitions, or horizontally in floors or assemblies with fire resistance ratings up to 2 hours.

Standard Construction

Frame: 22 ga. (0.85) galvanized steel.
Blades: 24 ga. (0.7) galvanized steel - curtain style.
Fire Closure Device: Fusible link.
Fire Closure Temperature: 165^oF (75^oC)
Minimum Size: 4" x 3" (102 x 76)
Maximum Size: Single Section: Vertical: 34" x 43" (864 x 1092)
                                                    Horizontal: 34" x 32" (864 x 813)
                           Multiple Section: Vertical: 118" x 68" (2997 x 1727)
                                                                    70" x 116" (1778 x 2976)
                                                       Horizontal: 34" x 33" (864 x 838)
                                                                          70" x 15" (1778 x 381)
Stainless Steel: Single Section: Vertical: 34" x 32" (864 x 813)

Ratings

UL 555 Fire Resistance Rating: 1-1/2 hour (vertical and horizontal)
UL HNLJ.V-5: Ventilation Duct Assemblies

UL 555 Listing: R14981
CSFM Listing: 3225-1404:101
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