Smoke Dampers SD102
The SD102 is a UL555S Leakage Class 2 smoke damper that is manufactured with one piece extruded aluminum airfoil blades and formed galvanized steel frame. It is elevated temperature rated for 250°F (121°C) and is designed for air-handling equipment isolation when the capacity is greater than 15,000 cfm per NFPA-90A. The SD102 is UL listed for 2,000 fpm, and 6″ w.g. (1.5 kPa), but is constructed and tested for velocities as high as 5,000 fpm and pressures as high as 24″ w.g. (6 kPa).