A gravity intake hood is a type of air intake system that uses the natural force of gravity to draw air into a building or other structure. This type of system is typically used in industrial settings, such as factories, warehouses, and other large buildings, where the need for air circulation is high. The gravity intake hood works by using a fan to draw air in from the outside, and then using the force of gravity to push the air down into the building. This allows for a steady stream of fresh air to be circulated throughout the building, helping to keep the air clean and free of pollutants. The gravity intake hood is an efficient and cost-effective way to provide air circulation in industrial settings, and is a great way to help improve air quality in these types of buildings.