Wanhao i3 Control Box backplate / rear cover for 70mm fan

I wanted a new rear cover for my Wanhao i3 printer control box to hold a bigger fan than the stock one, and also to move the wiring loom to gain a few extra inches as my control box is under my printer which is in an Ikea Lack Cabinet.

having looked through many on Thingiverse, I decided to design my own to encompass all the features I wanted - Which were...
1. Must take the biggest fan possible
2. must not stick out the back
3. must relocate the printer wiring loom to the top instead the