👉 The term "headrail" refers to a structural element that is installed at the top of a building or structure, typically supporting the weight of its own weight and providing support for the roof. It can be made up of metal, wood, or concrete, depending on the type of building it is used in. Headrails are often used in places where the weight of the building's load may exceed its own weight, such as at the top of a building that spans several stories or has multiple levels
