Use the Wall Opening tool to cut rectangular openings in a straight or curved wall. 
 To cut round or polygon openings, see 
  Edit a Wall Profile. 

Add an opening in an arc wall
 
To cut a rectangular opening in a wall
- Open an elevation or section view where you can access the wall that will host the opening. 
 
- Click 
  
 (Wall Opening). 
  Where is it? 
  
 
  - Architecture tab
Opening panel
 (Wall Opening) 
	  
- Structure tab
Opening panel
 (Wall Opening) 
	  
 
 
- Select the wall that will host the opening. 
 
- Sketch a rectangular opening. 
  
After you specify the final point of the opening, the opening displays. 
  
 
  Note: When creating an opening in a slanted, curved wall, the resulting opening will not be rectangular due to the wall geometry. 
  
 
 
- To modify an opening, click Modify, and select the opening. 
  
You can use the drag controls to modify the size and location of the opening. You can also drag it to a new location on the same wall, and add dimensions to the opening. 
  
 
  Example
 
	  
	 
Modifying a selected opening
 
 
   
 
 
To create a cased opening
- Open a plan view where you can access the wall that will host the opening. 
 
- Click Architecture tab
Build panel
Component drop-down
 (Component). 
 
- In the Modify | Place Component tab, click Load Family. 
 
- In the Load Family dialog, navigate to the Openings folder, select Passage Opening-Cased.rfa (imperial) or M_Passage Opening-Cased.rfa (metric), and click Open. 
 
- Click in the drawing to place the opening in a wall. 
 
To create a non-rectangular opening, see 
Edit a Wall Profile.