•  The inner construction of the door, including the power window regulator, door speaker, door harness and other parts, have been integrated into a single door unit.

•  Due to the integrated door unit, weight reduction has been achieved for the whole door.

•  Waterproofing of the inner door unit parts is achieved due to sectional design.

•  Fiberglass reinforced plastics have been adopted for the door unit carrier to improve rigidity.

•  A ripple-shaped side impact bar has been adopted to improve rigidity in case of collision.