Model SD-143 UL class 3 - smoke damper triple-V blade


The SD-143 smoke damper employs triple-V blades for point-of-origin control of smoke in static and dynamic smoke management systems. The SD-143 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.