Yup, my Viewsonic was off a lease and it was maintained really well.  There's not a scratch on it and the picture quality is as good as it was new.  The person that I bought my monitor from is mgoldb1022.  Not quite sure if you mean flat screen as in the LCD screens or the one's with the CRT tubes still.  Viewsonic classifies the monitor as a flat square display.  I don't know if that answers your question or not.

Viewsonic doesn't make these monitors anymore but they are equivalent to the G810's out right now. I've been saying 22 incher in the posts but it's 21 incher with 20" viewable.  Here's an article on the specs and the other features of the monitor.  If you look in the press release you'll see that it's the same as the G810.  Let me know if you have any further questions...