It's a remix of https://www.thingiverse.com/thing:2457516
I just added the front-plate with the "Anycubic i3 MEGA" lettering
and removed the grids from the fan holes.
The first version doesn't fit so good with the original part fan (you see),
but will fit good with an modded part fan.
Now I made a second version in which the hole fits the original part fan.