I am sure what I am looking for are not called thus.
I have some shelving from some shelves (separators) remain unused for want of 4 slotted bars.
Instead of angle bars these are as if 2 such bars are stuck together. It is the vertical bar tah supports shelves on both side with little flat hooks hung in them. The top horizontal bar ha some holes through which adjustable cable supports get strung crosswise.
I wonder if this makes sense.
Will take me a few days to get a picture taken and then put it somewhere for everyone to view.
Thanks