| CPC B64C 1/1461 (2013.01) | 14 Claims |

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1. A door frame unit for integration into a fuselage of an air vehicle, comprising at least one door frame component,
wherein the door frame unit has an inner frame and an outer frame surrounding the inner frame,
wherein the inner frame defines a door frame opening having horizontal edges and vertical edges in which a door is mountable,
wherein a plurality of cross struts run between the inner frame and the outer frame and are rigidly connected to the inner frame and the outer frame,
wherein the outer frame extends, at least in areas directly neighboring the corners of the inner door frame, at an angle to the cross struts, and
wherein the outer frame is formed circular, elliptical or oval.
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