This is a prototype module for the NAS ITX modular case - https://www.printables.com/model/590711-nas-itx-pc-case-with-stackable-expansions. It's specifically designed to accept the Startech HSB4SATSASBA. This module follows the existing foot print of the CPU module, but is quite a bit taller than the other drive modules.

Since the Startech module is also designed to fit in legacy 5.25" chassis, This prototype can accept 3x 5.35" devices as well. Not sure why you would want that. Tape drives? Blu-ray burners?

This is unfortunately a relatively expensive print, and I have not had the time to fully vet out all possible scenarios. Please try to verify dimensions as much as possible before printing. I have not built in much margin for printing differences. I will update this model as I spend more time on it and get it finished up.