Aero Dyne Installation in Unequal Elbows

A narrow strip (approx. 3/4 inch) is sheared from the center of both top and bottom side rail pieces. Vanes are attached to them by the usual method of driving fasteners through the slots. All of the vanes in the assembly then move together as the correct alignment is made for the elbow. , maintaining the leading and trailing edges in an exactly parallel relationship.
No other product provides this capability.
