Modified original source part from SOVOL for printability and strength. Added gussets and thickened critical portions to strengthen this over the original bracket and to properly adapt to 3D printed form factor. Also slightly modified parts of geometry for printability. Printed mine out of standard PLA with organic supports at .2mm layer height with a .4mm nozzle on Bambu P1S. When complete, drilled the fan mounting holes out with a 1/16 in drill bit and that allowed the standard screws that come with the original bracket to be threaded into the plastic directly. Snug fit but worked well and has not come apart!
The plastic one on my printer broke off after using it for a while, so hopefully the reinforced version lasts longer. Works just as well as the original did.
The author remixed this model.
Modified to increase strength and adapt for printability.