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Pottorff > Fire - Smoke Dampers > Fire Dampers > Dynamic 3 Hr Rated > VFD-30D-A

Model VFD-30D-A

3 Hour - Dynamic Rated - Fire Damper
Curtain Style Blade

The VFD-30D-A fire damper employs curtain style blades for point-of-origin control of fire in static and dynamic HVAC systems. The VFD-30D-A 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: 165oF (75oC)

Minimum Size: 6" x 6" (152 x 152)

Maximum Size: 36" x 36" (914 x 914)

Multiple Section: 108" x 24" (2743 x 810)

Stainless Steel: Single Section: 36" x 24" (914 x 610)

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)

 

 

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