140mm PC case fan grille, for science!

Still finalising my HEPA filter desk fan using 3 x 140mm corsair fans I had lying around, it needed a grille/duct to focus the output, and I went with the aperture style.  It looked cool so I made a thinner version, in case anyone's PC needs to have some added aesthetic to their PC fans, for science!

Pic is of my rough big layers duct off the HEPA filter setup which I am still working on.