Abstract: A door frame has hinge and latch jambs extending from opposite ends of a header jamb. Each jamb has an inside section for extending into a doorway opening in a wall and having a molding section extending laterally outwardly from the respective inside section for overlying a face of the wall adjacent the doorway opening. Each molding section includes an inner end extending from the inside section, an outer face extending generally perpendicularly from the inner end and an outer free end extending generally perpendicularly from the outer face. A jamb securing and sealing flange is joined to a jamb. The flange has first and second end sections coupled by a centered section. The first second is substantially parallel to and affix to a inner surface of the outer face of one jamb. The second end section extends substantially parallel to the first end section and laterally outwardly beyond its outer free end.