This well-built 120V 15A waterproof inlet kit is a great way to reuse the obsolete 30A inlet hole in the lower rear quarter panel on your vintage Airstream or other trailer. It looks very similar to the original, but is 15A instead of 30A. The inlet has a zinc plated (not polished) exterior and a spring loaded cover.
It includes the metal housing, a rubber gasket, the male receptacle that inserts in the housing, and a rubber boot that goes around the back of inlet to waterproof the wiring connections.
Installation is easy. Insert the housing through the trailer wall. Wire the interior power cord to male receptacle. Insert the receptacle in the housing. That's it.