I don't know of a pan off the top of my head. Is there a reason it has to be the same size as a whole sheet of filo? I cut mine in half and use that way - it fits in my pan perfectly.
Well, I just checked on e-bay - look at this link and see if it's what you need. I dunno - still may not be deep enough. What are you making? I have worked with filo quite a bit and I can't imagine why you couldn't make it in a regular oblong baking dish.
"Count yourself...you ain't so many" - quote from Buck's Daddy