Industrial Smoke Damper - Aluminum Airfoil Blade - UL Class 1 - SD-93

Standard Construction

Frame: 8" x 2" x 12 ga. (203 x 51 x 2.8) galvanized steel channel.

Blades: 7-5/8" (194) dual-wall extruded aluminum airfoil.

Axles: 3/4" (19) diameter plated steel.

Linkage: 3/16" x 3/4" (5 x 19) tied bars and 3/8" (10) pivot pins concealed in frame.

Bearings: Oil impregnated, sinteres stainless steel sleeve pressed into frame.

Blade Seal: Silicone, mechanically locked into blade.

Jamb Seal: Flexible metal jamb seals.

Actuator: 120 VAC, power-open, spring-close, external mount.

Minimum Size: 12" x 10" (305 x 254)

Maximum Size:
Single Section: 36" x 48" (914 x 1219)
Multiple Sections: 72" x 100" (1829 x 2540)

Ratings

UL 555 Fire Resistance Rating:
1 [8 cfm/sq.ft. @ 4 in. wg.]
[(0.04 m³/s/m² @ 1.0 kPa)]

Maximum Dynamic Closure Velocity: 3,000 fpm (15.3 m/s)

Maximum UL555S Rated Pressure: 4 in. wg. (1.0 kPa)

Maximum Temperature: 250^oF (121^oC)