Noctua Hide [4010/4020 Axial Fan Grill with Sidewalls]
thingiverse
To hide my not so pretty Noctua fan, I add three sidewalls to the fan grill (credits to @ML3DPrinting). One side is open because that's where the fan cables are. I am hope that you can cover other 4010 or 4020 fans with it.
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