In Imperial units, the opening is 8" x 6", so it may be possible to fit a 7" LCD panel. If I really had too, then I would be able to do this, I believe. I would probably completely re-route those vent-ducts, because otherwise, even more area would have to be cut-away to fit a wider tray. I do have an RNS-E fitted, so it is completely irrelevant to my A2. Like any project, if I did this again, then I would a far better job, based on my experience. Thank you for all your compliments!
David