Window inserts are a type of window treatment that can be used to enhance the look and feel of a room. They are typically made up of a PANE, a SCREEN, and a GLASS component. The PANE is a flat piece of material, usually made of wood or metal, that fits into the window frame. The SCREEN is a mesh material that is used to keep insects out while allowing air to flow through. The GLASS component is a transparent material that allows light to enter the room. Together, these components create a window insert that can be used to improve the aesthetics of a room.