Cable tray section comprising longitudinal metal wires, U-shaped transverse metal wires attached to the longitudinal metal wires, a pair of anchoring elements installed between the longitudinal metal wires, on the same vertical plane as side walls of the tray section; where said anchoring elements are attached to the last and next to last transverse metal wires; and where each anchoring element comprises a metal wire having a single metal wire close to the next to last transverse metal wire, and a pair of straight sections (32, 32') parallel to one another; wherein the straight sections (32, 32') of the anchoring elements project outwardly with respect to the last transverse metal wire of the tray section, - wherein the projection outwardly of the straight sections (32, 32') forms a rectangular section perpendicular to the straight sections (32, 32'), such that there is established a free space having a dimension corresponding to the thickness of a transverse metal wire of the tray section; - wherein the cable tray section additionally comprises at least one additional anchoring element, located on the horizontal plane of a lower wall of the tray section, and attached to the last and next to last transverse metal wires; wherein - the free space is located between the last transverse metal wire and said rectangular section; - wherein the metal wire of the anchoring elements is bent into a completely closed configuration at both its proximal end and distal end, said proximal end being understood as the end closest to the last transverse metal wire, and distal end being understood as the end of the anchoring element closest to the next to last transverse metal wire; - wherein the additional anchoring element is installed on the longitudinal axis of symmetry (A-A) of the tray section; and wherein the at least one additional anchoring element is structurally similar to the anchoring elements of the side walls of the tray section, said additional anchoring element comprising a metal wire having a single metal wire close to the next to last transverse metal wire, and a pair of straight sections (52, 52') parallel to one another; - where the straight sections (52, 52') of the additional anchoring element project with respect to the last transverse metal wire of the tray section, forming a rectangular section perpendicular to said straight sections (52, 52'), such that there is established a free space located between the last transverse metal wire and said rectangular section; - where said space has a dimension corresponding to the thickness of a transverse metal wire of the tray section; wherein the rectangular sections of the side walls of the tray section are opposite one another, arranged symmetrically with respect to the longitudinal axis (A-A') of the tray section, such that a recess towards the center of the tray section is defined; and wherein the metal wire of the at least one additional anchoring element is bent into a completely closed configuration at both its proximal end and distal end. - wherein the projection outwardly of the straight sections (32, 32') forms a rectangular section perpendicular to the straight sections (32, 32'), such that there is established a free space having a dimension corresponding to the thickness of a transverse metal wire of the tray section; - wherein the cable tray section additionally comprises at least one additional anchoring element, located on the horizontal plane of a lower wall of the tray section, and attached to the last and next to last transverse metal wires; wherein - the free space is located between the last transverse metal wire and said rectangular section; - wherein the metal wire of the anchoring elements is bent into a completely closed configuration at both its proximal end and distal end, said proximal end being understood as the end closest to the last transverse metal wire, and distal end being understood as the end of the anchoring element closest to the next to last transverse metal wire; - wherein the additional anchoring element is installed on the longitudinal axis of symmetry (A-A) of the tray section; and wherein the at least one additional anchoring element is structurally similar to the anchoring elements of the side walls of the tray section, said additional anchoring element comprising a metal wire having a single metal wire close to the next to last transverse metal wire, and a pair of straight sections (52, 52') parallel to one another; - where the straight sections (52, 52') of the additional anchoring element project with respect to the last transverse metal wire of the tray section, forming a rectangular section perpendicular to said straight sections (52, 52'), such that there is established a free space located between the last transverse metal wire and said rectangular section; - where said space has a dimension corresponding to the thickness of a transverse metal wire of the tray section; wherein the rectangular sections of the side walls of the tray section are opposite one another, arranged symmetrically with respect to the longitudinal axis (A-A') of the tray section, such that a recess towards the center of the tray section is defined; and wherein the metal wire of the at least one additional anchoring element is bent into a completely closed configuration at both its proximal end and distal end.