S-RD-II
Low Leakage Smoke Damper
The Model S-RD-II is a UL/ULC listed and labeled Class II leakage rated True Round Smoke Damper. Blades are of the double thickness, round design. The damper is approved for airflow in either direction and provides a maximum leakage of 20 cfm/sq. ft at 4” wg. s.p. It has been designed to be installed in a vertical or horizontal mounting position in the ductwork or a separate sleeve within 24” of the smoke partition. These dampers are approved for use in engineered smoke control systems and are controlled via smoke detection system. Electric (24v, 120v, and 230v) or pneumatic actuators are used to operate the smoke dampers
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