Use this procedure to create a mullion element definition from a profile. If you do not want a straight edge to your mullions, you can use a profile to define mullions with curves, jags, or any other shape. 
Note: The insertion point of the profile is aligned with the centroid of the mullion. 

 Infill alignments with default and profile-based mullions 
 
-  Create the profile to use for the mullion. 
 
-   Click 

 . 
  
-  Expand Architectural Objects, and expand Curtain Wall Unit Styles. 
 
- Select a curtain wall unit style. 
 
- Click the Design Rules tab. 
 
-  In the left pane, select Mullions under Element Definitions. 
 
-  Click the New Mullion icon to create a new mullion definition. 
 
- Enter a descriptive name for the mullion. 
 
-  Specify a width and depth for the mullion. 
 These dimensions are used to calculate the center point of the mullion for aligning the profile and also to specify a boundary for the adjacent infill. 
  
-  Select Use Profile. 
Note: The Profile options are available only if you have profiles in the current drawing. 
  
-  Select a profile from the list. 
 By default, the profile is inserted using the same width and depth with which it was created. 
  
-  To adjust the size of the profile to fit within the width or depth dimension of the mullion, select Auto-Adjust Profile Width or Depth. 
 
-  To mirror the profile, select X or Y for Mirror In.  
 
-  To rotate the profile, specify a rotation angle for Rotation.  
 
-  Specify any offsets. 
 
- Click OK. 
 
 After you create a mullion definition, you can assign it to any mullion in a curtain wall unit.