Customized version of http://www.thingiverse.com/thing:128718

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=128718

Using the following options:

mesh_holes_d = 8
solid_outer_border = 1
mount_hole_width = 82
mesh_clearance = 1
mount_hole_d = 3.5
fan_side_length = 92
mesh_offset = 100
mesh_thickness = 2
mesh_kind = hex
mesh_density_ratio = 100
outer_roundness = 50