Most commonly known as garage doors to those outside the industry, panel doors are made up of single panels or of sections that form a single panel. Installed between the stiles and rails that form the outside frame of a door, they open and close guided by the movement of the panel, unlike doors that coil or fold to open and close. Panel doors are available in commercial and residential models and in a variety of materials, including wood, steel and aluminum. The array of panel door types, styles and available features is limited...