Hoping someone can help me out - of course I know the tray will fit 30x40 inch paper on the inside, but I'm wondering what the external size of these trays is before I spend a small fortune to get a set of them imported to Australia and find we can't fit them in our sink. If the internal size is significantly larger than 30x40 that would be helpful to know (e.g. can a standard 42 inch roll fit across the tray !?)