I made this vent to match the CD drive vent that I made for more case airflow. This zip drive vent is held in place by 2 M3.5 screws, I happened to have m3.5x8 on hand but shorter should work no problem.

I have removed my drive bays to fit a 280mm AIO, so I do not know if this can be used if you still have your drive bays. You can combine it with my CD drive vent as well, for an interesting look and more airflow for your cooler.