Wave share 5" hold down thin

If you are going to use the pwm fan controller or the Pi 4b heat sink fan guard.

You should get this, it allows room for the fan controller connection for the temp sensor to clear the hold down for the monitor screen (5" wave share). Also if you are going to use the heat sink with fan and the below fan guard, it will allow clearance for the screw on the fan guard to not hit the screw on the monitor hold down.

https://www.printables.com/model/377219-modular_panel_prusabox-pwm-control-side-v21-with-h

https://www.printables.com/model/368812-raspberry-pi-4-aluminum-heatsink-with-pwm-controll