ATX Computer case Support 120mm fan mount

This is something I made to go alone with stephenmhall's ATX backplane. This thing is taller adds material on the bottom to compensate for the proper ATX motherboard mount height. Shims will have to be printed for the ATX backplane in order to make it tall enough. I think the shims need to be 3.19mm.

I made this for rigidity and to become a modular system for making open frame computer systems.