Abstract: An extruded door frame assembly comprising a pair of upright metal studs secured to the wall along opposite sides of the opening for the door a pair of extruded upright metal frame members or stiles secured to the metal studs, and an extruded metal cross-piece or lintel connected across the top of the door opening between the upright members or stiles. The metal studs include a laterally projecting flange which extends longitudinally for the length of the stud along a first side thereof. The extruded stiles include a longitudinal slot formed along the inner face of a corresponding first side wall, opening to receive the longitudinal flange of the respective stud to which the stiles are to be connected. An inner face portion adjacent the opposite second side wall of each stile includes a cam surface terminating at a longitudinal recess to receive therein a correspondingly shaped longitudinal projection along the opposite second side of each metal stud.