I found those outlets at a local RV dealer. The factory tightens them too tight and they crack. They are not easy to replace because of the way the wires are attached. I found a you tube video on how to replace using a c-clamp. I have replaced a few of mine.
Depending on location, I have actually used regular house boxes and outlets. They make shallow boxes and you might have to open the holes slightly, but that's the way to go and cheaper as well. Don't know how handy you are, but it's not too difficult to do. I replace/repair most things myself so I know it's done right. If you don't feel comfortable doing it, you might have a buddy that will help you. Just make sure you unplug from shore power and turn off converter before you start. Hope this helps. Ron
2017 Leprechaun 311FW, Toad-2019 Ford Ranger XLT
Other toys---DW's: 1957 Chevy Nomad, '01 PT Cruiser, '08 Mustang Shelby GT. Mine: '16 Ford F150 XLT 3.5 eco, '55 Ford Gasser, '50 Ford F1, '67 Mini (full race)