Opposed Blade: Rectangular
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|OPPOSED BLADE VS PARALLEL BLADE DAMPERS|
|OPPOSED BLADE DAMPERS Blades Rotate in Opposite Directions
Best used in applications requiring Proportional Volume Air Control.
When Blades are partially open - Air is directed to the center of the duct.
This results in uniform air velocity and reduced air turbulence
|PARALLEL BLADE DAMPERS Blades Rotate in 1 Direction
Best solution for simple Open / Close applications.
When Blades are partically open - Air is diverted to the sides of the duct.
This results in non-uniform velocity. Airflow to branch ducts can be affected