I updated all of the dimensions. I also champhered the ends of the base plate, I think it looks better but I attached the old file as well if you don't like it.
What do you think about this one?
How do you like this support, it is 1/4" thick. I attached all of the .dxf files and I added slots in the base for the power supplies.
Here is just another design that I came up with.
I simplified the design of the top a bit. I also added the mounting holes. Is this simplified enough? Any other changes you would like?
Is this what you want for the support?
Let me know what you like and don't like about this design. I'd be glad to modify it.
How does this look? I was thinking two of them back to back for each support. Will you be able to put a bend on each end for the tabs?