The event horizon's trans-dimensional manifestation, otherwise known as the great attractor, is a singularity, as it has the entire mass of the previous universe condensed into a single point in our space. By previous universe, I mean where it exists as an event horizon. In that universe, everything is accelerating towards that event horizon. (just the opposite of ours) It should be fairly easy to figure out the terminal diameter of this universe. Where the mass will be traveling at the speed of light due to the observed acceleration, or the point of infinite redshift. At that point, you find yourself accelerating towards the black hole that we are in. 11 dimensions looking forward and back but really only 7. Four are only apparent in the math, with the fourth being time running backwards, which it doesn't. The beginning progresses to the end, which becomes a new beginning. In all time, all possibilities will have been expressed. And that, my friends, is God at his finest. Actually, for me, you can make that god. But hey, it is up to you. Who is to say there are no dimensions outside this loop. Or even something Divine. If you claim to know...
The other dimensions, for lack of a better description, are length prime, width prime, and height prime. They can exist within a point in the non-prime universe and also the converse.