To Remove a Mullion Definition From a Door and Window Assembly Style

Use this procedure to remove a mullion definition that you no longer need. You cannot remove a mullion definition if it is assigned to a mullion, but you can remove it if it is assigned as an override to a mullion. Also, you cannot remove the Default Mullion definition, but you can modify it as needed.

1. Click Manage tabStyle & Display panelStyle Manager.
2. Expand Architectural Objects Door/Window Assembly Styles.
   Note: Alternatively, select a door/window assembly in the drawing, and click Door/Window Assembly tab General panel Edit Style drop-down Door/Window Assembly Styles.
3. Select a door/window assembly style.
4. Click the Design Rules tab.
5. In the left pane, select Mullions under Element Definitions.
6. Select the unneeded mullion definition from the list, and click (remove mullion).
   

7. Click OK.