The GFD damper, with its quick opening and closing option, is specifically designed for the use with spot extraction applications.
The GFD can open from 0 to 90° in just second. Its rotating speed can be set between 1 to 5 seconds (using ø315, ø400 or ø500 mm).
This damper is also available with modulating motor for fume hoods and fume for accurate control of the air.
The damper is available in sizes ø80 mm to ø500 mm.