VENTILATION DEVICE FOR A MOTOR VEHICLE AND MOUNTING METHOD

A ventilation device for a motor vehicle includes a frame defining an opening for an air flow, and at least one flap mounted so as to rotate relative to the frame about a pivot axis between an open position, suitable for allowing the air flow to pass, and a closed position, suitable for reducing the intensity of the air flow or changing its direction. The flap extends along the pivot axis and has a first end and a second end that are opposite one another along this axis and mounted so as to rotate on the frame around the pivot axis. The ventilation device further includes an intermediate support located between the first end and the second end along the pivot axis. The flap is mounted so as to rotate on the intermediate support relative to the frame about the pivot axis, the intermediate support being attached on the frame.