Glass pane dividing - solid wood cross bars of various widths divide the pane into several parts.
Glued-on - wood laths glued on the glass from both sides; an aluminum spacer fitted between the panes; appearance of a glass pane dividing cross bar.
Frame-type, fixed - wood grid with a frame, fixed to the external side of the window.
Fastened - removable frameless grid, fastened to the external side of the window.
Inter-pane - a brass or aluminum grid of different colors fitted in the inter-pane space; no obstruction to window/pane cleaning.