Use the stairs

The stairwell is well-lit. You see grey-painted metal steps leading up to a landing, or down to a landing. The door you just came through is labeled '6.'

You go down the stairs

Every floor is labeled with the floor number. Your key won’t fit any of the doors except the sixth floor door.

At the bottom there are two doors. One is labeled “Lobby and the other “'Exit." The exit door will take you to the recycling furnace out back.