Butterfly Style Blade
BD-10 backdraft damper employs gravity operated butterfly style blades to restrict airflow and to permit the forward flow of air in the intended direction. The BD-10 damper may be mounted vertically or horizontally in either exhaust or intake installations for low velocity and pressure applications.
Frame: 22 ga. (0.85) galvanized steel.
Blades: 24 ga. (0.51) aluminum - butterfly
Seals: Neoprene blade edge seals.
Minimum Size: 5" x 5" (127 x 127)
Maximum Size: 36" x 24" (914 x 610)
Maximum System Velcocity: 1000 fpm (5.1 m/s)
Maximum System Pressure: 1 in. wg. (0.25 kPa)
Temperature: -25oF to 150oF (-32oC to 66oC)