Golden Age Audio Project Unite BIG Rack-Kit

I still don't know the use of that many little screws, you can use only 6 of them. And 2 metal plates for what? No specefication included.
I'm not overly convinced this wins wars of sturdiness and i need to cut of 5cm. It is far deeper than nescessarry.
And because of the ridiculous price you'd expecta golden one but no, it's just extorsion because you ain't find something else to use...
Like my title, it fits, looks okay and that's it...

I use it to mount my 2 GAP comp3a compressors in my rack. Build quality is great. Perfect!