<P> A muntin in U.S. use is a strip of wood or metal separating and holding panes of glass in a window . Muntins are also called "muntin bars", "glazing bars", or "sash bars". Muntins can be found in doors, windows and furniture, typically in western styles of architecture . Muntins divide a single window sash or casement into a grid system of small panes of glass, called "lights" or "lites". </P> <P> In UK use a muntin is a vertical member in timber panelling or a door separating two panels . </P>

What do you call the dividers in windows