Airflow  directivity inside a car are mainly influenced by the airduct orientation, number of airvents, shape and positions of the airvents inside the cabin. All cars come with a 4 outlet airvent on the dashboard. Normally, the centre airvents are targeted to cool rear passengers and the side airvents are for driver and front passenger.

If you need to replace this part, ensure that you buy the right airvent for your car's air conditioning system.