This one has at least been delivered enough times to justify creating a "What to expect during installation" video for new buyers: https://www.youtube.com/watch

This one has at least been delivered enough times to justify creating a "What to expect during installation" video for new buyers: https://www.youtube.com/watch?v=d17RyUAjzNs https://www.youtube.com/watch?v=d17RyUAjzNs. I don't know whether that's 2, 20, or 200 units, though.