Air distribution assembly for vehicles

Air distribution assembly for vehicles, comprising: a stationary case (10) provided with at least a first and a second opening (18,20) for the passage of the respective air flows, a first shutter (30) articulated to the case (10) about a first axis (34) and associated to the first opening (18), a second shutter (32) articulated to the case (10) about a second axis (36) and associated to the second opening (20), the first axis and the second axis being substantially orthogonal to each other, and a connecting element (38) operatively interposed between the first and the second shutter (30,32), and having a variable length.