You open your new mailbox and you find a key labelled “1P” or “2P.” That key opens a package box holding a package for you, but which package box? It should be the box labelled “1P” or “2P” that is at the bottom of the same mailbox unit that your mail arrives in. If the key has a number, like “9801.1,” then look for the the old-style package box with that number on the front of the door.
