What are the standard dimensions and material thickness of the 41x42mm back-to-back strut channel?

The back-to-back strut channel is formed by spot-welding two 41×21 mm slotted steel channels into a rigid 41×42 mm box-section profile. The standard material thickness is 2.0 mm, while a 2.5 mm option is available for heavy-duty configurations. Standard length is 3 000 mm, with custom lengths available upon request. Elongated slots measure 14 mm × 28 mm and are spaced at 50 mm intervals. These dimensions conform to IEC 61537, and dimensional tolerances are verified by type testing at accredited third-party laboratories.