Size of queen mattress

[funpilot]

[p]I presume the queen in the 21 bhs or 21 rbs has the same size queen as the 28 bhs.  Could someone tell me what the actual dimensions of it are?   I am considering an air mattress for it and since I need to get one for some guests coming to our house, would be nice to cover two bases at once.  Any suggestions are appreciated.[/p][p]
[/p][p]
[/p]

[djsamuel]

It is a full size queen mattress (60 x 80)