Chrysler Dodge Caravan 2007 Owner's Manual page 281

UNDERSTANDING YOUR INSTRUMENT PANEL 281
Air comes from the outlets in the instrument panel. Each Bi-Level Mode
of these outlets can be individually adjusted to direct the
flow of air. Moving the air vane knob on the center
outlets down, will close off the air flow from the center
outlets. The thumbwheel next to the outboard outlets can
be rotated to regulate or shut off the air flow from these
outlets.
4
Bi-Level Outlets