just another fan grill design
easy to print, no print support.
the large air gap between the fan blades and the grill allows little to no added turbulence noise from it.
10mm thick to match a 4020 fan thickness when used with a 4010 fan, practical when used with shrouds that uses 4020 fan, but want to use a 4010.
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The author remixed this model.
Made it an easy to print alternative without print support