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Turning vanes inside of large fire-resistance rated Durasteel pressurisation ductwork
Turning vanes inside of large fire-resistance rated Durasteel pressurisation ductwork
Turning vane close-up
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.

See also