What is a door stile?

A door stile is a vertical framing member of a door that runs from top to bottom on the edge of the door panel. It is typically made of wood or other durable materials and serves several purposes. Firstly, it provides structural support to the door panel, helping it to maintain its structural integrity. Secondly, it helps to prevent warping and twisting of the door panel over time. Thirdly, it provides a surface to which hinges and other hardware can be attached. Finally, it can have decorative features that add to the overall aesthetic of the door. There are different types of door stiles, including plain stiles, beaded stiles, and raised panel stiles, among others.