I'm going to call mine between 7', and 7'-1" to the top of the ridges in the center of the roof panel. This in with my rear directionals turned down some, as they are taller than the roof in the factory position. I also had to angle my radio antenna down (which didn't seem to affect reception). This was to fit under my 7' overhead door opening, which I still had to rework a bit (and I still need to finish) to get the tractor inside. If height is a concern, a 3030HSDC with R4s should just squeek in with no modification (but watch the directionals).