This is what I was looking at first.
Connecticut Electric PSC-55GR-HR 120/240V RV Panel 50A Breaker, 20 Amp GCFI I have Connecticut Electric Transfer Switch in my garage that I use for home generator. I love it, but some of those shore cords / adaptors have those pull handles and it just seem like it would not close. With door opening from side to side it would be really bad if on all the time and rain.
https://www.ebay.com/itm/Connecticut...I/381394365005
Then I started to look at this model.
Connecticut Electric
50-Amp RV Power Outlet
https://www.homedepot.com/p/Connecti...FYrGwAodpe0EMw
Our curiosity on model in your picture, what is that door flipped up on the left side? If you provide make model number I will look at it too.