This is a custom cover for the XL CPU board with fans

This is a cover I made for my XL printer that is located in my garage.  I live in Phoenix, Arizona so summers are quite hot.  I have had success with my MK3+ running it in the summer if I have a fan blowing on the CPU board.  The standard XL cover, unlike the MK3+, has no slots to allow for airflow.  This cover has two fans, an intake and an exhaust so it still keeps the enclosure covered but with the two fans you have quite adequate airflow.  I have personally put a self adhesive heat sink on both the CPU and the WiFi components on the main board.  These are readily available from Amazon.  The holes on the cover have been designed around the Nocula NF-A4x10 FLX 40x10mm fan.  These are 12vdc fans and are very reliable and quiet.  There is a hole to support a standard 12Vdc plug and there are holes in the cover so the power cords from the fans can be wired and powered together from the plug.  I am using a simple, 12Vdc@500ma power brick with a male connector that matches my female plug.  You need to wire both fans together so there is soldering involved.  I designed this such that the fan that is on the back and pushes air in needs to be mounted with the visible label pointing to the inside of the enclosure.  The fan on the top is the exhaust fan and the printed label needs to be visible and pointing out of the enclosure.  I designed this in FreeCAD.  I have included the FreeCAD files as well as my final STL, PrusaSlicer file and gcode for an XL project.  I printed mine using PETG.