The specification for this GFK box was not to exceed the maximum total weight of 38 kg. We were not allowed to change anything about the aerodynamic shape. Thanks to the optimized fiberglass lightweight construction in combination with a stable aluminum frame construction the strict customer requirements were met. In places, the FRP box has a wall thickness of about 1 mm, in the hinge and lock areas, this is much stronger. The door was stabilized with a lightweight PU foam plate.