Fire Damper - 3 Hour - Dynamic Rated - Curtain Style Blade - Class C - VFD-30D-C

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)