A transom for an interior door is simply a decorative glass or wood panel over the top of an interior door.  For example, a glass transom may be 1lite (with one piece of glass), or possibly a 3 lite (glass with three sections), over the top of your door.  Glass can be clear glass, or one of our many decorative glass options.  A transom can be made for our interior doors for a unit over a door and a sidelite, or combinations of doors, and sidelites.  The possibilities are almost endless.   Inquire about your options from one of door specialists at InteriorDoors.Com We are open Monday - Friday 8:00 - 4:30 P.M. EST  and you can call toll free at 800-772-0314 to go over you options.