What is the Thule Pro Bar for T Slot Tonneau Covers?

T-slot cross bars I'm in the process of putting the first round of add-ons onto my new '07 XC70 I picked up a pair of wing profile cross bars

I don't know about wind noise, but I had considered building a roof rack out of T-Slots It turned out to be very expensive

tome slot Carry a cargo load on your roof with the Cadillac Accessories Removable Roof Rack Serving as the base for your roof mounted cargo management accessories,

trelock slot Built with the strength to keep heavy loads in place, our steel, T-slot Load Stops integrate with T-slot crossbars or Platform Racks