This is an antenna wall mount to easily mount/dismount the Alfa Tube UV Wifi - USB antenna.
See here for the product.
The adapter is attached to the wall of the caravan. Antenna slides into the mount from above.
Printed in ASA (UV-resistant equivalent for ABS).
Infill 15%, printed with a 0,6mm nozzle and a layerheight of 0,48mm.
4 shells, 4 top- and bottomlayers
Use 4mm self tapping stainless steel screws and a butyl based kit.
Best location is, of course, at the top where the antenna has a clear view.