Quick question for owners of a 27" iMac. What is the height, in inches, from the bottom of the Stand to the top of the screen? If someone could do an exact measurement that would be really helpful. The tech specs only show the height of the screen (20.4") but do not include the stand. Any help would be appreciated as I try to figure out if a 27" iMac and Stand will fit on my desk (it has a shelf on the top). Thank you edit: For reference, the height between my desk and the top shelf, is one line shorter than 21.5"