A concealable structural frame for mounting a hinged door flushed to a surface of a drywall structure. The concealable structural frame comprises a frame body including a stud facing wall, a door facing wall, a front surface wall, a rear surface wall, a stud engaging wall and a hinge engagement support. The door facing wall is spaced apart from the stud facing wall and includes a door receiving recess. The front surface wall and the rear surface walls are spaced apart and at least partially extend between the stud facing wall and the door facing wall. The stud engaging wall projects outwardly from the stud facing wall and defines a plasterboard receiving recess. The hinge engagement support is positioned between the stud facing wall and the door facing wall and extends along at least a portion of the door receiving recess.