I am thinking about an easy and stable mounting option of the Matrix case in my studio rack.
Here are pics of a first test using an old frontplate sheet metal strip from an old 1HE device:

It works quite well and now I like to use more than just 2 screws to mount the case with the metal strip.
Would you please tell me the spacing of the holes in the red area at the bottom of the housing?
I may also be able to measure it, but just to be sure it would be great if you could provide the exact spacing value.
Thanks in advance.