Prusa i3 PSU cover

Slightly changed version of fred-s-garage's "Prusa i3 PSU cover" (thing:1941040).
This one has a modified size for the power switch, so it fits for a generic switch like the following: http://www.rakuten.de/produkt/leucht-wippenschalter-rot-wippschalter-2-polig-4-kontakte-schalter-904042561.html
I will use this for my 30A PSU (the one with fan), but i will also test it for the 20A PSU (without fan).