This tray is designed for the Phanteks Enthoo Pro 2, I have no idea if it will work elsewhere. It holds 6 drives in the upper drive storage area. Model should work fine in the lower half as well, concurrently. This turns what used to hold 8 drives into 12, though should be modifiable (See attached Freecad file) to fit at least 16 into the drive storage column. It also swaps the drives to face forward so the IO is more easily accessible. This also allows you to install side fans since the cables no longer intersect them, though you may need to get creative considering the hooks and screws still exist (I got it to work).
To use the model, print one half as the file is attached, mirror the model in the slicer, and print again. Use at least PETG in terms of strength and heat resistance. I personally used Polycarbonate with a 0.8mm nozzle at 0.12mm layer height so YMMV. I also printed without a top or bottom (only infill and walls) to increase air flow. Advised to use enough walls to fill the space between the honeycombing for structural rigidity.
Feel free to ask me questions.
The author marked this model as their own original creation.