Lateral fan for Anycubic I3 Mega extruder nema17 motor

I designed this case to cool the extruder/feeder motor of my Anycubic I3 Mega.
It is designed to mount a 40mm fan (I used an AAB Cooling Super Silent R4) using 4 anti-vibration rubbers.
By mounting the fan in the right direction to take air from extern and putting it inside the case, you'll maximize the cooling of the motor. I also designed an opening to blow air direct to the gear that grips the filament becouse I want to avoid that it became too hot and soft.