Air grille. Left Lower. Left.black. A nozzle / Vent to direct HVAC Air to the vehicle's windshield of to defrost / defog the windshield. An opening in the dashboard that allows blown Air to reach the passenger compartment. Dashboard. Duct cover. Louver. Outer. Side outlet. Trim. Valve and Amplifier; Duct. Windshield Defogger. Windshield Defroster Nozzle.