The panel on a flat panel door is … wait for it … flat. That means the entire panel is thinner and completely recessed below the stiles and rails. The thickness of the panel on a flat panel door will be dictated by the width of the groove on the stile and rails it fits into. Fl...
A mullion refers tothe vertical piece of wood separating the panes of glass, not both the verticals and the horizontal stile pieces. ... Today, mullions are the vertical bars between the panes of glass in a window. As with muntins, their role is primarily decorative now. What is meaning ...