Ender 3 4020 Fan Housing

#4020 Axial Fan Cover
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This part is based on the stock fan cover, but allows the use of a 4020 axial fan on Ender 3 and maybe other Creality printers. My original fan died after a couple of weeks. I'm now using a Sunon MagLev 40x40x20 fan which moves plenty of air and runs smooth and quietly, but wouldn't fit using the original fan cover.

I designed this in multiple parts to avoid the need for supports. Print with the fan intake hole down. Be sure to print the left bracket with a flat