The opening should be two inches wider than the door frame and about an inch taller in height.
How to frame a door in a concrete block wall.
Place a level on the bottom of the frame and check to see if it is level.
If it is not lift up the bottom of the frame and slide shims under the frame until it is level.
Stack the shims on top of each other until the frame levels out.
Once both the top and bottom are secure the sides are secured based on whatever material is on the wall next to it.
Simply drill the hole in the base material with the door frame in place insert the concrete anchor and tighten.
Examine the sides of the door opening in the wall to determine the material makeup of your foundation wall.
If the wall is concrete you can proceed immediately to placing the frame.
Here is a step by step tutorial on how to install a prehung exterior door frame in a concrete wall.
There is no prior spotting of the hole.
Secure the frame to concrete block.
Mark the opening size for the door on both sides of the wall.
If the wall is made of concrete blocks you need to fill the cavities in the blocks to provide a flat surface to which you can attach the frame.
Both the sleeve anchor and tapcon allow door frames to be placed in position leveled and plumbed before the anchor is inserted through the door frame.
Add another set of marks across the top of the frame to represent a steel lintel that will support the load above the door.