outlet cover/adapter for camper 12V to USB

thingiverse

I acquired an adapter to charge my USB devices within my camper van. I sought out a location where to install it and decided to swap out a standard 12-volt socket instead. Next, I needed a new cover to ensure everything fits together seamlessly. Fortunately, I had access to a brand-new 3D printer at the time, so I created one of my initial 3D designs using FreeCAD. I incorporated the tube in the center because the space behind the cover was not deep enough for the installation to be successful. The ring on the backside provides stability to the cover plate. The inner tube is approximately 29 millimeters wide.