Cable tunnel STEEL CABLE DUCT ST 1, cable tunnel, total width: 250mm, total height: 45mm, areas of application: protection of cables from mechanical influences, can be anchored to the subsurface with countersunk screws, benefits: point loads are better distributed over the supporting floor, extremely resilient due to the stable central bar, as the tunnel shape is additionally stiffened, the cable tunnel ST also offers further advantages in terms of building safety, e.g. in the event of a fire, such as being halogen-free and fire-resistant