As the most popular in the world, sectional garage doors are made up of panel sections that are connected with hinges. As the door opens and closes, wheels at the edge of each panel roll inside a vertical track on each side of the door opening. The hinges between each panel section bend over a curved portion of the track. This feature allows the door to sit parallel to the ceiling when completely open or in line with the walls when completely closed.
A pair of high-tension springs above the opening are attached to cables that operate the door and hold it from drifting down when only partially open. These doors are typically made from aluminium, are low maintenance, and can be customized to include window inserts, hardware, textures, and colors. They come in both insulated and non-insulated models.