In the process of designing an outdoor enclosure for a POE powered, Tinkerboard-s / RTL-SDR receiver, mostly to use as an ADS-B receiver, I needed a secure way to mount the RTL-SDR v3 receiver within the enclosure. Simple enough and provides 4 - 4mm holes for mounting hardware.

I've not printed this using FDM as currently I only have an SLA printer. Let me know if you have issues. I could include the .STEP file if there is demand for it.