On-Line Catalog : Smoke Dampers > 3V Blade > SD-142
Model SD-142 UL class 2 — smoke damper
The SD-142 smoke damper employs triple-V blades for point-of-origin control of smoke in static and dynamic smoke management systems. The SD-142 is qualified to 2,000 ft/min (10.2 m/s) and 4 in.wg. (1.0 kPa) and may be installed in, or adjacent to vertical walls or partitions, or horizontally in, or adjacent to floors or assemblies.