fresh air vent 
1.Used as return air vent, complement the screen for optional. 
2.All size available, upon customers' requiremen

  >The angle of fixed oblique blade in the vent is 24°,which can be installed in the ceiling or side walls being used as supply,return air vent.

  >The air flowing can adopt as single deflection or double deflection model.

  >Any shape can be manufactured according to the decoration requirements

  >Used as return air vent, complement the screen for optional.

  >All size available, upon customers' requirements