Fire Damper - 1-1/2 Hour - Triple-V Blade - FD-140

Standard Construction

Frame: 5" x 1" (127 x 25) galvanized steel hat channel with interlocking corner gusset. Equivalent to 13 gauge (2.4) channel frame. Low profile head and sill used on sizes less than 13" (330) high.

Blades: 6" x 16 ga. (152 x 1.6) galvanized steel - triple-V.

Axles: 1/2" (13) diameter plated steel hex.

Linkage: Concealed in frame.

Bearings: Stainless steel oilite, sleeve-type.

Seals: Flexible metal jamb seals.

Fire Closure Device: Fusible link.

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

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

Maximum Size:
Single Section: 36" x 48" (914 x 1219)
Vertical Mount: 72" x 48" (1828 x 1219) or 36" x 96" (914 x 2438)
Horizontal Mount: 72" x 48" (1828 x 1219)
Stainless Steel (vert/horiz): 36" x 48" (914 x 1219)

Ratings

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

UL HNLN: Ventilation Duct Assemblies

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