Mine is indeed larger than A4, if I'm converting inches to millimeters correctly, which I'm rather certain I am. It's 12x14--not much larger, but still larger. It won't fit flat into my desk or either chest of drawers, or on or in any other piece of furniture I own (other than my bed). I could either keep it in the envelope in which it arrived or buy something in which to store it, neither of which would be durable enough to survive living with me.

In comparison, the friend I mentioned above? Hers seems to be 8x10, which is smaller than our paper standard of 8.5x11, and thus can be stored easily almost anywhere.