SD-35

The SD35 is a low leakage rated smoke damper used in ducts that penetrate smoke rated barriers. The SD35 damper is constructed with triple V-groove blades for velocities up to 2,000 fpm (10.2 m/s) and 4″ w.g. (1kPa). The SD35 may be installed vertically (with blades running horizontal) or horizontally and is rated for airflow and leakage in either direction.