5131. 5132. Lower air duct. PartQualifier: w/auto temp cntrl. PartQualifier: w/o auto temp cntrl. Right Lower. Right.W/O UPLEVEL SLT PACKAGE. w/auto temp cntrl. A channel that directs fresh Air into the passenger compartment. HVAC Air Distribution Ducts located under the dashboard. Assembly - Floor Outlet. Cabin Intake. Center. Defroster. Distributor. Extension. Housing. Inlet. Instrument Panel. Outer. Side.