Moin Servus Moin this is a simple case for a USB Fan Continuous Controller.
Supports are only needed for the "USB_DC_Controller_Case_Base".
The case can easily be resized and customized with the provided Fusion360 (.f3d) file.
Compatible with the USB Fan Controller as seen here:
https://www.amazon.de/-/en/gp/product/B08B3BFFJ3?psc=1
https://www.amazon.com/CenryKay-Stepless-Controller-Regulator-Function%EF%BC%884PCS/dp/B08G1GLF23