The following wall opening dimension points can be specified in the AEC dimension style: 
| Selection  | 
Description  | 
Example  | 
| Opening Max. Width  | 
Dimensions the maximum width of a window, door or opening in a wall.  | 
 | 
| Opening Min. Width  | 
Dimensions the minimum width of a window, door, or opening in a wall.  | 
 | 
| Center of Opening  | 
Dimensions the center point of a window, door, or opening in a wall.  | 
 | 
 
  
Note: If you click 


Options, and then click AEC Object Settings, there are two options under Wall settings: Dimension to Center of Opening and Dimension to Outer Frame of Opening. These settings have no influence on how openings are dimensioned in AEC dimensions.