40mm fan cover
thingiverse
It is a 40mm fan protector so that the fan blade is not easily broken. I'm priting by PLA+ but i think any material hard enough will be good. simple double cross design and allow high windflow for the fan.
Download Model from thingiverse
With this file you will be able to print 40mm fan cover with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 40mm fan cover.