Turning vanes

Component of HVAC systems

For turning vanes in racing cars, see Bargeboard (aerodynamics) § Turning vanes.

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Turning vanes inside of large ductwork

Turning vane close-up

HVAC turning vanes are sheet metal devices inside of mechanical ductwork used to smoothly direct air inside a duct where there is a change in direction, by reducing resistance and turbulence.

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