Ok, I started modifying a couple of my honeycomb fan grilles and just couldn't stop myself. So now, for your project building pleasure, here are a set of even more grilles for box type cooling fans. There are 8 sizes to fit 30, 40, 50, 60, 70, 80, 92 & 120mm fans, and five different patterns. The grille is recessed on the fan side to ensure clearance to the blades. See the readme file for specs & dimensions.