Raspberry Pi 4 rack unit

For a small linux cluster test environment, I bought 5 Raspberry Pi 4.

To accommodate all 5 Pi's in one rack unit, I rebuilt a 19 inch panel.
https://www.amazon.de/gp/product/B075RQMZFC/

I used a sertronics heatsink.
https://www.berrybase.de/neu/armor-geh-228-use-f-252-r-raspberry-pi-4-champagner-gold

and a USB-C angle adapter.

https://www.berrybase.de/raspberry-pi-co/raspberry-pi/kabel-adapter/usb-kabel-adapter/usb-c-3.0-adapter-c-buchse-c-stecker-seitlich-gewinkelt-schwarz

So