Fire / Smoke Dampers

Combination Fire Smoke Damper (UL 555S) Standard Construction Details

Fire Rating 3 Hours
Blade 16 Gauge High Quality Galvanized Steel "3 V Type" Roll formed Blades
Frame 16 Gauge High Quality 130 x 24.5 Galvanized Steel Hat Shaped.
Blade Stop 18 Gauge Galvanized Steel fixed at 45º angle.
Side Seals Stainless Steel 0.3mm thick, 304 Grade fastened between casing and blades.
Linkage Side linkage concealed in frame
Max Velocity 2000 FPM (based on Horizontal Blades)
Bearing / Bush Fire Resistant Brass Bush
Jack Shaft Zinc plated mild steel 12mm Round across the blade length &12 x 12mm square
Controlled Closure Device (Heat Actuated) 74 Deg.C (165 Deg.F)
Minimum Size 8” x 8”
Maximum Single Section 36” x 36”
Mounting Vertical / Horizontal
Operating Power Supply 230 VAC (Standard), 24 VAC (optional)
Actuator Honeywell
Damper Sleeves Sleeves will be as per NFPA-90 A Standard
Finish Mill Finish