Owners should be very involved in the planning process. Hiring someone to. do it or delegating it to someone who is not a key member of the company. will result in an inferior plan. No plan (or a poor plan) is a leading cause of business failure. You can. improve your chances of success with a good Business Plan.
Instructions. Position the metal studs that will form the two sides of the rough opening so that the distance between them is 1 inch greater than the exterior dimensions of the door frame. This provides you with space to adjust the door frame and make it perfectly square and level with shims.
2. Find the rough door opening width. This is the distance from the last or outer stud on one side, underneath the jamb or casing, to the last or outer stud on the other side of the opening. Look closely at the opening and identify the wood casing or jamb that lines the inner door opening.