DIYbanter - View Single Post - Steel channel for cable

(Steve North) wrote in message . com...
I'm going to get some hat section steel channel, but not having used
any before can someone tell me what the standard 12mm, 25mm and 38mm
dimensions refer to please?

Is it the whole width of the channel,
or just the

width of the section that carries the cables?

YES !

Thanks for any help

Steve