A louver, or intake louver, is a type of window or ventilator used to control the flow of air into a building. Louvers are typically installed in the walls or roofs of buildings to allow air to enter and exit the building. Louvers are typically made of metal, wood, or plastic, and are designed to be adjustable so that the amount of air entering the building can be controlled. Louvers are also designed to keep out rain, snow, and other elements, while still allowing air to pass through. Louvers are an important part of any building’s ventilation system, as they help to regulate the temperature and humidity levels inside the building. They also help to reduce the amount of noise entering the building, as well as helping to keep out dust and other airborne particles.