This is my biggest project so far. My daughter and son-in-law wanted a stained-glass window for their new dormer window to block the view of the neighbor's roof. The prairie style was selected to compliment the "Frank Lloyd Wright" look of their neighborhood. The large upper window hangs on chains in front of casement window, which can be opened for ventilation. The small lower stained-glass window at the stairway landing replaces the old glass pane and can also be opened.