Aluminum smoke damper
Greenheck's Model SMD-401EF smoke damper features an extruded aluminum frame and airfoil blades.
Greenheck’s line of life safety dampers continues to grow with the addition of the Model SMD-401EF smoke damper. Featuring an extruded aluminum frame and airfoil blades, Model SMD-401EF is available in sizes up to 192 inches wide by 120 inches high with a wide range of actuators in modulating or two-position operation. Model SMD-401EF is UL 555S Class I leakage certified and rated for velocities up to 3,000 fpm and pressures up to 6 in wg for both horizontal and vertical installations.