Fire Damper - 1-1/2 Hour - Dynamic Rated - Curtain Style Blade - Class A - VFD-10D-A

Standard Construction

Frame: 22 ga. (0.85) galvanized steel.

Blades: 24 ga. (0.7) galvanized steel - curtain style.

Fire Closure Device: Fusible link.

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

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

Maximum Size:
Single Section: Vertical: 36" x 48" (914 x 1219)
Horizontal: 36" x 36" (914 x 914)
Multiple Section: Vertical: 72" x 120" (1829 x 3048) or 120" x 72" (3048 x 1829)
Horizontal: 36" x 36" (914 x 914) or 72" x 18" (1829 x 457)

Stainless Steel: Single Section: Vertical: 36" x 36" (914 x 914)

Ratings

UL 555 Fire Resistance Rating: 1-1/2 hour (vertical and horizontal)

UL HNLJ.V-5: Ventilation Duct Assemblies

Maximum Dynamic Closure Velocity:
4,000 fpm (20.3 m/s)
2,000 fpm (10.2 m/s)

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