Greenbriar Bunker shitter!

For like two hundred years or some shit this radio signal has been broadcasting for two oldsters camped in the safety of a bunker but who couldn’t leave because of the creatures. They died down here (see second image) but thank hell they had this shitter to maintain order during this terrible ordeal. Here’s the question, Brigade - Is this a prison shitter? Is that shitter a Wilson? Perchance a little of both.