I'm going to go out on a limb here and suggest that it may be a door from a
locker on a boat called a "Baja". ;-))

Whether it is a boat manufactured under the name "Baja", or a model name from
another company is open to debate. Either way, if you don't have a "Baja
Somethingorother" or a "Somebodyelse's Baja" in your driveway, you probably
don't need it.

Steve