Keep in mind that if the door has 2x4 walls, then the frame will be 4-1/2" (11. 4 cm). If the door has 2x6 walls, then the frame will always be 6-1/2" (16. 5 cm).
Always start with the side where the door will attach to the hinges. Make sure to fasten the hinge side jambs directly to the stud. You can fasten them loosely in case you need to slide a jamb behind it, but it is best to keep it tight.
Weather strips are a good way of hiding screw marks. Screws make exterior doors stronger and more adjustable. Drill a hole in the jamb before adding the screws, then attach the weather strips over them. [9] X Research source
It’s ideal to do this first so you can gauge how much space you have for the door stops and align them properly behind the hinges.
The stop molding is thin. When cutting it yourself, you only need strips of wood about one or two inches (two to five cm) wide.
