Back panel for Wanhao Di3 v2 supports a 60mm fan with a large honeycomb grill.
The holes for the fan screws have been increased to accommodate 5mm case fan screws, slight countersink
The 2 lower holes have been filled in there are there no tabs for these in the v2 control box.
I also have a version that has a smaller honeycomb grill
http://www.thingiverse.com/thing:1629084
wanhao_duplicator_i3_v2_back_panel_60mm_wbig_honey_grill.stl | 217.8KB |