The following is a description of the Frame and Sash page of the Custom Settings panel for a Basic Window, from the INT ARCHICAD Library.
Use these controls to adjust the frame and sash width and thickness.
Note: To set options for the sash types and grids, use the Sash Options tab page.
Frame Element Joinery: Choose either Mitered or Butt Joint.
Uniform Frame Width: Check this box if you need a single frame width for the entire window structure. To set a different frame width for any and all sides of the frame, uncheck the box and then click the Set Frame Widths button to go to the Frame Widths tab page.
See Frame Widths.