20A Fanless PSU + Dual MOSFET Case with Fused Power Inlet Switch Module and bracket (FLSun i3 and others)

I actually quite like the 20A PSU, no loud little fan and it's easy to add a large quiet one to keep it cool, it's been almost a year and it has not given me any trouble so far, even cranked up a bit.

Thanks to JamesK1 for the original design. I Changed standoff layout to accommodate up to two of the smaller and cheaper 50mmx60mm MOSFET boards, added a couple of hooks for wire management, and rounded the power wire outlet hole for a grommet or strain relief, and added some optional mountin