Model VFD-30D-C

3 Hour - Dynamic Rated - Fire Damper
Curtain Style Blade

The VFD-30D-C fire damper employs curtain style blades for point-of-origin control of fire in static and dynamic HVAC systems. The VFD-30D-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 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.

Fire Closure Device: Fusible link.

Fire Closure Temperature: 165^oF (75^oC)

Minimum Size: 4" x 3" (102 x 76)

Maximum Size: 34" x 32" (864 x 813)

Multiple Section: 106" x 20" (2692 x 508)                           

Stainless Steel: Single Section: 34" x 20" (864 x 508)

Ratings

UL 555 Fire Resistance Rating: 3 hour (vertical)

UL HNLJ.V-5: Ventilation Duct Assemblies

Maximum Dynamic Closure Velocity: 4,000 fpm (20.4 m/s)

Maximum UL 555S Rated Pressure: 4 in. wg. (1.0 kPa)