Those are the older style feet that I don’t think they sell anymore. They are the same height as the RCH feet which is 15mm higher than the RCL’s. I have the RCL’s with the Vortex bars on that I can measure once I’m home in a few days.
Maybe the Rhino Rack pioneer platform with the RCL6 feet? Or even the Vortex bars? I’m out of town for a bit but can take some measurements when I’m home.
The nice thing about the feet vs the RR backbone is that you can take it all off with 6 bolts. If clearance under the tent is tight, leave...