1-1/2 Hour - Dynamic Rated - Fire Damper
Installation Instructions
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.
Frame: 22 ga. (0.85) galvanized steel.
Blades: 24 ga. (0.7) galvanized steel - curtain style.
Fire Closure Device: Fusible link.
Fire Closure Temperature: 165oF (75oC)
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)
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