Adjustable Door Frame

A door frame assembly comprising:

• vertical frame jambs each having a top end and bottom end, one vertical frame jamb on each side of a door frame assembly and adapted to be installed in a substantially vertical position, each vertical frame jamb having a width between an inside face exposed to the open doorway and an outside face adapted to be exposed to a rough door opening;
• a horizontal frame header butted and connected on opposite ends thereof to the top end of each vertical frame jamb;
• wherein the vertical frame jambs are hollow rectangular tubes and each have at least one aperture therein that extends through and is open on both the inside face and outside face of the vertical frame jamb;
• shim plates that are sized to fit inside the hollow metal rectangular tubes into the hollow space between the inside face and the outside face of the threaded apertures that extend through the vertical frame jambs, and further wherein the shim plates comprise threaded apertures that align with the apertures on the inside face and outside face of the vertical frame jamb;
• and a shim screw adapted to be mounted in the vertical frame jamb apertures and shim plate threaded aperture, and further adapted to be adjustable so that it may be threaded to extend outwardly from the outside face of the vertical frame jamb to variably engage a rough door opening surface.