- Frame: The frame is the structural support for the window, and it is usually made of wood, metal, or vinyl. - Sash: The sash is the part of the window that moves up and down or side to side to open and close the window. - Glazing: The glazing is the glass or other transparent material that fills the opening in the sash. - Trim: The trim is the decorative molding that surrounds the window. - Hardware: The hardware includes the locks, hinges, and other mechanisms that allow the window to open and close.