Fire Damper - 3 Hour - Static- Curtain Style Blade - Class B - VFD-30-B

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:
Vertical Mount: 4" x 2" (102 x 51)
Horizontal Mount: 6" x 8" (152 x 203)

Maximum Size:
Single Section:
Vertical: 36" x 33" (915 x 838)
Horizontal: 38" x 33" (965 x 838)
Multiple Section:
Vertical: 108" x 21" (2743 x 533)
Horizontal: 76" x 93" (1931 x 2362)

Stainless Steel:
Single Section:
Vertical: 36" x 21" (914 x 553)
Multiple Section:
Vertical: 108" x 21" (2743 x 533)

Ratings

UL 555 Fire Resistance Rating: 3 hour (vertical and horizontal)

UL HNLJ.V-5: Ventilation Duct Assemblies