An oven comprising a cooking chamber into which the objects to be cooked are placed, a door that allows access to the cooking chamber, an outer panel situated on the door and that forms the surface of the door that contacts the outside, an inner panel forming the surface of the door that contacts the cooking chamber, a casing situated between the outer panel and the inner panel, on one side of which the outer panel is secured and on other side of which the inner panel is secured in such a manner that the outer panel and the inner panel are parallel to each other and an intermediate panel disposed into the casing in such a manner that it is situated between the outer panel and the inner panel, wherein the door has - at least two housings situated on at least two corners where the profiles of casing intersect and - one or more brackets mounted on the housing in such a manner that one part of it remains inside the casing and one part of it remains outside the casing, and that extend between the inner panel and the outer panel, and onto which the intermediate panel is seated, wherein a bracket is in the form of prism and has a base onto which the outer panel seats and a ceiling bearing against the inner panel mounted on the casing and walls joining the base and the ceiling, and further comprises a stepped platform disposed between the base and the ceiling, having a support surface onto which the intermediate panel seats and a stopper perpendicular to this support surface, wherein said oven comprises a housing which is configured by performing cut-out operation on the edges of the.casing where the profiles intersect and which extends on the corner where the profiles intersect, on both sides of the corner, on the surface where the inner panel seats, in such a manner that it surrounds the corner and which extends along the corner where the two profiles intersect in the vertical plane, between the two profiles that are perpendicular to each other, and which comprises a recess that is located on the portion of the profile that enters into the slit, characterized by the casing which has quadrangular profiles, formed by joining together the profiles in a U-form and by bracket that comprises two slits extending along the two walls perpendicular to each other, between the base and the ceiling in such a manner that these slits don't join in the corner where the two perpendicular walls intersect but open outwardly in the other corners by diverging from each other and surround the platform from both of its sides, and further characterized by the door comprising a protrusion in the form of a detent that seats into the recess by stretching while the bracket is mounted on the housing and which is disposed on the walls perpendicular to each other of the bracket. - at least two housings situated on at least two corners where the profiles of casing intersect and - one or more brackets mounted on the housing in such a manner that one part of it remains inside the casing and one part of it remains outside the casing, and that extend between the inner panel and the outer panel, and onto which the intermediate panel is seated, wherein a bracket is in the form of prism and has a base onto which the outer panel seats and a ceiling bearing against the inner panel mounted on the casing and walls joining the base and the ceiling, and further comprises a stepped platform disposed between the base and the ceiling, having a support surface onto which the intermediate panel seats and a stopper perpendicular to this support surface, wherein said oven comprises a housing which is configured by performing cut-out operation on the edges of the.casing where the profiles intersect and which extends on the corner where the profiles intersect, on both sides of the corner, on the surface where the inner panel seats, in such a manner that it surrounds the corner and which extends along the corner where the two profiles intersect in the vertical plane, between the two profiles that are perpendicular to each other, and which comprises a recess that is located on the portion of the profile that enters into the slit, characterized by the casing which has quadrangular profiles, formed by joining together the profiles in a U-form and by bracket that comprises two slits extending along the two walls perpendicular to each other, between the base and the ceiling in such a manner that these slits don't join in the corner where the two perpendicular walls intersect but open outwardly in the other corners by diverging from each other and surround the platform from both of its sides, and further characterized by the door comprising a protrusion in the form of a detent that seats into the recess by stretching while the bracket is mounted on the housing and which is disposed on the walls perpendicular to each other of the bracket.