A sash for doors or windows, the sash comprising: - at least a first and a second sheet of glass positioned facing each other and parallel to each other at a mutual distance; - a spacer and joining element interposed between two inner surfaces (2a, 3a) facing each other of the two sheets of glasses (2, 3) to define a first closed inner perimeter zone or chamber and a second open outer perimeter zone or cavity for each side defined by the pair of sheets of glass (2, 3); - a structural sealing/adhesion component applied along the outer perimeter defined by the cavity; the structural component occupies a volume of the cavity which is able to allow contact of the structural component at least with the spacer element and with a part of the inner surface (2a, 3a) of the two sheets of glass (2, 3), characterized in that it comprises: - at least an element for housing accessory components (9a, 9b, 9c, 9d) for supporting and/or operating the sash associated with the structural component, for each side defined by the first and second sheet of glass (2, 3); each element being comprised of a rigid profile having, in cross section, at least one closed base side and two flaps (10, 11) each formed by a stretch transversal to the base side and a recessed stretch, parallel to the base side, to form a channel with an opening; the rigid profile being associated with the structural component at least along the outer surface of the base side; the rigid profile comprising at least one anchoring rib projecting from the outer surface of the base side and immersed in the structural component; the anchoring rib having, in cross section, a form of a keel extending with its vertex towards the spacer element; - a rigid plate, for at least one side of one of the first and second sheets of glass, having at least a first portion associated, by removable adhesion means to the edge of an outer surface (2b or 3b) of one of the sheets of glass (2, 3), opposite the corresponding inner surface (2a or 3a) defining the cavity, for the covering at least of the edge; and wherein the rigid plate comprises a second portion protruding in a flag-like manner from the edge of the sheet of glass (2, 3) and parallel towards the outside of the sheet of glass (2, 3). - at least a first and a second sheet of glass positioned facing each other and parallel to each other at a mutual distance; - a spacer and joining element interposed between two inner surfaces (2a, 3a) facing each other of the two sheets of glasses (2, 3) to define a first closed inner perimeter zone or chamber and a second open outer perimeter zone or cavity for each side defined by the pair of sheets of glass (2, 3); - a structural sealing/adhesion component applied along the outer perimeter defined by the cavity; the structural component occupies a volume of the cavity which is able to allow contact of the structural component at least with the spacer element and with a part of the inner surface (2a, 3a) of the two sheets of glass (2, 3), characterized in that it comprises: - at least an element for housing accessory components (9a, 9b, 9c, 9d) for supporting and/or operating the sash associated with the structural component, for each side defined by the first and second sheet of glass (2, 3); each element being comprised of a rigid profile having, in cross section, at least one closed base side and two flaps (10, 11) each formed by a stretch transversal to the base side and a recessed stretch, parallel to the base side, to form a channel with an opening; the rigid profile being associated with the structural component at least along the outer surface of the base side; the rigid profile comprising at least one anchoring rib projecting from the outer surface of the base side and immersed in the structural component; the anchoring rib having, in cross section, a form of a keel extending with its vertex towards the spacer element; - a rigid plate, for at least one side of one of the first and second sheets of glass, having at least a first portion associated, by removable adhesion means to the edge of an outer surface (2b or 3b) of one of the sheets of glass (2, 3), opposite the corresponding inner surface (2a or 3a) defining the cavity, for the covering at least of the edge; and wherein the rigid plate comprises a second portion protruding in a flag-like manner from the edge of the sheet of glass (2, 3) and parallel towards the outside of the sheet of glass (2, 3).