"Air vents" are openings or passages in a building or vehicle that allow air to flow in or out. They help to circulate fresh air and regulate temperature. Full definition
While this vehicle isn't huge, there really should be another set of air vents in the rear. (autolist.com)
It can be equipped with air vents on the back of the B - pillars as well as the back of the center console for the kids to manage their own climate needs. (cars.com)
The best outdoor cat houses are designed with air vents that won't allow rain to get inside. (americas-pet-store.com)