Gridfinity multi compartment tray - 3x3x3U

I am a big fan of the gridfinity designs @marcelblijlevn has created and shared. He does a great job of providing different sizes, which I use to stack conveniently in my desk drawers. However, I needed this one to be exactly 3U in height, so I figured I would try my hand at modifying it for my use case. I'm posting here in case it's helpful to others. If you have the space, I highly recommend using this in combination with his 1.5U tray, which you can find at https://makerworld.com/en/models/907802-gridfinity-parts-tray-3x3-1-5u-height#profileId-868161. The tray pictured was printed in PETG, as that is what I use for nearly everything. I am providing a PLA profile as well. Please let me know if you have any suggestions for revisions or additional designs.