As you can see, on this frame border there are several such spaces that are not meant just for text insertion, but also illustrations, design elements, etc. Borders like this one were very popular at the end of the 19th and the beginning of the 20th century, and they were often used as books decorations.
If you need this frame border to be of a different width and height, this can be achieved quite easily by using 2D CAD or vector software. Just cut the border into several parts (on the straight lines), drag the parts to the desired location, and reconnect the straight lines to each other.
This free border vector is fully editable, just download it bellow, open the file in 2D CAD or vector editing software and customize.