Prusa MK3 Mean Well LRS-350 Specific Mount

This is a remix of https://www.thingiverse.com/thing:2812350 (Mean Well LRS-350 version) with a few small modifications: * The entire mount is shifted one millimeter in the positive X direction (based on a source comment) * The vent side wall was lowered to expose another row of vent holes. * A hole on the back side was added to expose a couple more vent holes. * Some fillets, just because :) [Edit 07/21/2019] Added Fusion 360 file