Box for DC-DC Converter

This is a bespoke box for a very cheap DC/DC buck converter which I frequently use to efficiently downconvert the voltage from the 12V supply on bord of a sailing yacht to any value needed. The converter comes fully assembled on a PCB without protection and can be ordered here: https://www.banggood.com/Mini-DC-DC-Converter-Step-Down-Module-Adjustable-Power-Supply-p-920327.html

You just have to drill two holes for the power cables on two opposite sides in the lower part of the box and glue (fa