Ventilation grille v2

This is a new version of my model http://grabcad.com/library/ventilation-grill Compared to a previous version which was made in one piece, this one consists on may pieces and is movable. Because I didn´t have any spare air conditioner at hand to brake them forgive me if some of the pieces do not follow logic. I tried to make this model as realistic as possible. Considering both dimensions and how it should move. This ventilation grill could be used in a car, bus or a boat.