Square section heavy duty aluminium truss twist-resistant version with 40 cm long sides.
Chords A: extruded tube Φ 48 x 3 mm EN AW 6082 T6
Diagonals B: extruded tube Φ 22 x 2 mm EN AW 6082 T6
Ends C: aluminium casting plate EN AC 42200 T6
Connection systems QXFC: quick-fit kit; QXSM10: bolt connection kit
It replaces the old Heavy Duty series QD40S and QD40SA. It is characterized by the introduction of Φ 48x3 mm chords and Φ 20x2 mm diagonals on all the faces. This truss constitutes Varitower 3-40.