All curtain wall unit grids, including the primary grid, can have frame definitions. The frame of the primary grid defines the outer edges of the curtain wall unit. The overall frame size is determined by the length and height of the primary curtain wall unit grid or a nested curtain wall unit grid. You can define a frame by specifying a width and depth or by selecting a profile.
Specifying default and profile-based frames
You create frame definitions for a specific curtain wall unit style. Those definitions can be assigned only to frames in curtain wall units of that style. You can create as many frame definitions as you want, and then assign the definitions to the frames. If you have nested grids, each grid has its own frame. There is a default frame definition that you can modify and assign as needed. Unassigned frames are not displayed.
Materials and Display Properties for Frames
If you do not use materials to control the display properties of frames, you can specify their display properties in the curtain wall style. The layer, color, linetype, and other display properties of the default frame are applied to all frames unless you create a custom display component for each definition. You can then control the display of each frame definition independently.