When I was in university, I had a part-time job as a carpet cleaner. We had contracts to clean apartment hallways and suites. We sometimes used a big time portable carpet cleaner. One day, I got to the end of a hallway and opened the door to the stairwell. I put the carpet cleaning unit out on the stairwell landing so I could finish the hallway. On the landing sat a fire extinguisher in a box case with a glass front.
