Door assembly, comprising: a door having a door body opening in an outboard direction and a door load bearing beam mounted along the side face of the door body; a door jamb; a door stop rail fixedly attached to the door load bearing beam, the door stop rail projecting outwardly towards the door jamb; and a door jamb stop rail fixedly attached to the door jamb, the door jamb stop rail projecting inwardly towards the door body, wherein the door stop rail and door jamb stop rail each comprise a rail body (8; 18) and a toothed protrusion structure of bearing lugs (9; 19) fixedly attached to the rail body (8; 18), the door stop rail comprising a door stop bearing surface oriented towards an outboard direction, and which, in a locked state of the door assembly is at least in part in physical contact with a facing door jamb stop bearing surface of the door jamb stop rail oriented towards an inboard direction, characterized in that the bearing lugs (9; 19) of the door stop rail and door jamb stop rail have an inverse isosceles trapezoid congruent outer shape, the toothed protrusion structures of bearing lugs (9; 19) of the door stop rail and door jamb stop rail being shaped such that their respective bearing surfaces (7, 17) mutually detach upon moving the door body from the locked state of the door assembly in the direction of extension of the door stop rail and the door jamb stop rail by a distance corresponding to a characteristic width of a bearing lug (9; 19), thereby allowing the bearing lugs of the door stop rail to pass between the bearing lugs of the door jamb stop rail and the door to open. a door having a door body opening in an outboard direction and a door load bearing beam mounted along the side face of the door body; a door jamb; a door stop rail fixedly attached to the door load bearing beam, the door stop rail projecting outwardly towards the door jamb; and a door jamb stop rail fixedly attached to the door jamb, the door jamb stop rail projecting inwardly towards the door body, wherein the door stop rail and door jamb stop rail each comprise a rail body (8; 18) and a toothed protrusion structure of bearing lugs (9; 19) fixedly attached to the rail body (8; 18), the door stop rail comprising a door stop bearing surface oriented towards an outboard direction, and which, in a locked state of the door assembly is at least in part in physical contact with a facing door jamb stop bearing surface of the door jamb stop rail oriented towards an inboard direction, characterized in that the bearing lugs (9; 19) of the door stop rail and door jamb stop rail have an inverse isosceles trapezoid congruent outer shape, the toothed protrusion structures of bearing lugs (9; 19) of the door stop rail and door jamb stop rail being shaped such that their respective bearing surfaces (7, 17) mutually detach upon moving the door body from the locked state of the door assembly in the direction of extension of the door stop rail and the door jamb stop rail by a distance corresponding to a characteristic width of a bearing lug (9; 19), thereby allowing the bearing lugs of the door stop rail to pass between the bearing lugs of the door jamb stop rail and the door to open.