1000. 8057. Defroster duct. Front. W/MANUAL 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. Air hose. Cabin Air Intake. Center outlet. Center plate. Cover. Defroster grille. Housing. Instrument Panel Air. Intermed. Piece. Windshield Defogger Vent. Windshield Defroster Nozzle.