We actually saw the plant in Nashville (and the one in Memphis too, it's downtown). Pretty non-descript, in a commercial area with lots of logistics companies, could use some new shine and comparatively small. We saw what must have been the packing station through a window (we were there when it was closed), looked surprisingly mom & pop to me.
My only comparison is the Warwick factory which I saw in the late nineties on a tour and which was much more modern and mechanized. As large or even larger too.