Air distributor. w/AC. w/o electronic AC. A channel that directs fresh air into the passenger compartment. A nozzle / vent to direct HVAC air to the vehicle's windshield of to defrost / defog the windshield. HVAC Air Distribution Ducts located under the dashboard. Air distributor. Cabin Air Intake. Connector tube. Cooling. Defroster grille. Extension. Floor. Heater. Instrument Panel Air. Outlet. Windshield Defogger Vent. Windshield Defroster Nozzle.