Just a suggestion... on a "critical" measurement like this, it's probably best if you do the measuring. Put a zipper or door in the shrink wrap and you can get in and out. Nothing against anyone that may have the same setup and measure for you - but if, by accident, they're off by just a bit - that can mess up your plans.
Or... you know what you already have and how it fits - don't go any taller (or adjust).
