A mechanical louver is a device that is used to control the flow of air in an environment. It is typically used in ventilation systems to regulate the amount of air that is allowed to enter or exit a room. The louvers are usually made of metal or plastic and are adjustable to control the amount of air that is allowed to pass through. The louvers can be adjusted manually or with the use of a motorized system. Mechanical louvers are an important part of any ventilation system as they help to regulate the temperature and humidity of a room, as well as providing a source of fresh air. They can also be used to reduce noise levels and provide a barrier against the elements. Mechanical louvers are an essential part of any ventilation system and can be used to create a comfortable and healthy environment.