What are the standard dimensions and slot specifications for a 41x82mm back-to-back strut?

The back-to-back strut channel features a composite profile measuring 41 mm in height by 82 mm in depth, created by joining two 41×41 mm slotted channels. The standard material thickness is 2.0 mm, with a 2.5 mm heavy-duty option available. Channels are supplied in a standard length of 3 000 mm, with custom lengths available upon request. Both faces incorporate elongated slots measuring 14 mm by 28 mm, spaced at 50 mm intervals along the channel length, enabling flexible fastener positioning and on-site adjustment for MEP supports and structural framing. These slot dimensions are consistent with common industry hardware, allowing the use of standard T-bolts and channel nuts to secure pipe clamps, cable tray brackets, and equipment mounting plates without field drilling.