What is the side post of a doorway called?
A stile is the narrow vertical segment located on either side of a door panel.
What is a window in a door called?
Glazing, also known as glass in a front door, is the window inside of a door. It allows in natural light and can help brighten a doorway.
What is a door mull post?
A mull post in essentially a “double-sided” jamb. This is used to help cover the seal between a door and the sidelites to give it a “cleaner” look and appearance.