Air curtains are often used to stop flying pests, dust, debris, and wind from entering a building. Air curtains create an air barrier between the exterior air and the conditioned interior air.
An air curtain, also known as an air door, is a machine that blows a controlled stream of air across an opening to the other side to create an air seal. This seal separates different environments while allowing a smooth, uninterrupted flow of traffic and unobstructed vision through the opening.