Prusa i3 Simple Arduino Case RAMPS 1.4

This is a simple RAMPS 1.4 case drawn in Freecad.
The top locates a 40mm Fan.
The bottom is just open, so air and wires are free to exit.
The primary problem I was trying to solve was the RAMPS fan causing a draft across the printing bed. This does the job nicely and it protects against knocks/dust etc.
Two parts, the part which screws down with the RAMPS1.4 board to the Prusa i3. The otherpart is the simple case which hooks onto the 1st part.

******UPDATE MK2******
After printing n