Eh? Low, not in my experience in owning 2 different Foxes for over 15 years. They generally have a rep for "tall" rigs.
I'd call the factory and get the frame height of the rig they are building for you.
2008 F350SD V10 with an 2012 Arctic Fox 29-5E
When someone tells you to buy the same rig they own, listen, they might be right. When they tell you to buy a different rig then they own, really pay attention, they probably know something you don't.