What does each elementary net of a BAK 15 consist of?

Each elementary net of a BAK 15 consists of an upper horizontal strap and two independent lower straps. This design is crucial for ensuring stability and proper load distribution during operation. The upper strap provides a solid framework from which the two lower straps can independently support and secure the net, ensuring that forces are evenly distributed and that the net can handle the loads it is designed for. This configuration enhances the net's reliability and functionality, especially in applications where secure containment and support are necessary.

The choice featuring a single horizontal strap lacks the additional support needed for stability, while the option with two independent upper and lower straps suggests a more complex design that doesn’t align with the specific configuration of a BAK 15. The option mentioning a mesh net and support frame is not relevant, as it does not accurately describe the elementary net structure designed for this particular setup.