Model FD4-3C

3 Hour - Stastic Fire Damper
Curtain Style Blade

The FD4-3C fire damper employs curtain style blades for point-of-origin control of fire in static HVAC systems. The FD4-3C imay be installed in vertical walls or partitions, or horizontally in floors or assemblies with fire resistance ratings up to 4 hours.

Standard Construction

Frame: 22 ga. (0.85) galvanized steel.
Blades: 24 ga. (0.7) galvanized steel - curtain.
Fire Closure Device: Fusible link.
Fire Closure Temperature: 165^oF (75^oC)
Minimum Size: Vertical Mount: 4" x 2" (102 x 51)
                           Horizontal Mount: 4" x 7" (102 x 178)
Maximum Size: Single Section: Vertical: 34" x 32" (864 x 813)
                                                     Horizontal: 36" x 32" (915 x 813)
                                                     Vertical: 106" x 20" (3048 x 1930) 
                           Multiple Section: Horizontal: 74" x 91" (1880 x 2311)
Stainless Steel: Single Section: Vertical: 34" x 20" (864 x 508)
                            Multiple Section: Vertical: 106" x 20" (2692 x 508) 

Ratings

UL 555 Fire Resistance Rating: 3 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