Which components make up the structure of a panel door?

The structure of a panel door is composed of stiles, rails, and mullions, which together define the overall framework and design. Stiles are the vertical pieces that run along the sides of the door, while rails are horizontal pieces that are located at the top and bottom (often at the middle as well in some designs). Mullions are vertical or horizontal dividers that create separate panels within the door, adding not only structural integrity but also aesthetic appeal.

This combination of components is essential for supporting the panels they hold, allowing them to expand and contract without compromising the door's integrity. Each part plays a crucial role in how the door functions, including how it opens and closes, as well as how it interacts with its surroundings. The presence of these elements is what distinguishes panel doors from other types, emphasizing both their functionality and design versatility.