{{Short description|Component of HVAC systems}} {{for|turning vanes in racing cars|Bargeboard (aerodynamics)#Turning vanes}} {{more footnotes|date=May 2015}}
thumb|upright|Turning vanes inside of large ductwork thumb|right|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== *Duct (HVAC) *Pressurisation ductwork
==External links== {{Commons category|Turning vanes}} *[http://buildingengineer.wordpress.com/2009/12/11/turning-vanes-necessary-component-or-efficiency-reduction-device/ Building Engineer Word Press Treatise] *[https://patents.google.com/patent/US3381713 Turning Vane and Rail Construction Patent #US 3381713 A] *[https://brownshvac.net Brown HVAC]
{{HVAC |state=collapsed}}
Category:Heating, ventilation, and air conditioning
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