The door is called a Vent Door. It's used for—you guessed it, ventilation. I spoke with American Trailers of the Carolinas , manufacturers of many sorts of refrigerated trailers, and got a very ...

The Lamborghini Unica is an Aventador with a vent and a door but no roof, windshield or pillars. It's insane and hopefully real. Lamborghini Aventador LP700-4: First Drive ...

The VanAir vented door provides ventilation in interiors without sacrificing acoustic and visual privacy. The door allows air to flow from one side, through its core, and out the other side.