Customized version of Mother Of All Brackets, created with Thigiverse's customizer (https://www.thingiverse.com/apps/customizer/run?thing\_id=166045)
Nothing fancy, but it does the job.
Using the following options:
fan_size = 75
fan_hole_spacing = 71.5
screw_diameter = 3.25
pcb_width = 84.3
bracket_height = 40
bracket_length = 10
bracket_thickness = 3.0
cross_bracket = 10
The author remixed this model. Imported from Thingiverse.