80mm fan guard

It's a fan guard / grill for a 80mm fan. Useful for computer fans, cooling of 3D printer electronics, etc. Prevents you from getting beheaded when you try to stick your head in the fan. Thickness is 4mm (or simply use the scale option of your slicer to change the thickness). There is also a version with countersinks for the bolts.

40mm version is here: http://www.thingiverse.com/thing:1585244
120mm version is here: http://www.thingiverse.com/thing:1581974

30, 50 and 92 mm versions will al