'Individual paintings on a stretched canvas, masonite canvas board or similar, must not exceed 2 square metres in area. Individual paintings over 2 square metres must be rolled, folded or hinged. The complete submission must not exceed 6 square metres when displayed for marking.'
There is this book you can get at any book store called 'Visual Arts in a month' or something, it's purple or blue. Anyway, it tells you every kind of regulations there are, so it's worth a read