On-Line Catalog : Fire Dampers > Dynamic - 1½ hr > 3V Blade > FD-140
Model FD-140 1-½ hour — fire damper triple-V blade
Application
The FD-140 fire damper employs triple-V blades for point-of-origin control of fire in static and dynamic HVAC systems. The FD-140 is qualified to 2,000 ft/min (10.2 m/s) and 4 in.wg. (1.0 kPa) and may be installed in vertical walls or partitions, or horizontally in floors or assemblies with fire resistance ratings up to 2 hours.Documents
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