I just received this unit and the dimensions given are not accurate.  The overall width when measured at its widest point (at the base at the wheels) is 14-1/2"  and when I put this on the table and measured it standing up, it measured 22-1/2".  The actual depth was 9", but that would mean that you under pack this bag and let the top of it sink back into the sides.  Me, I tend to over pack and with this unit, I could easily do a moderate pack job and it bulge to 10" or 11".  So, back it goes.

I must say the construction on this unit looks stellar.  My last quicksilver bag lasted me 6 years and travelled all over the place.  I am finding it hard to replace.  I wanted this bag to work, but the dimensions are the dealbreaker.