Roll N Lock Tonneau Cover

I am trying to find a cover like the Retrax that has t-slots that go the full length of the cover sides I know EGR makes one for ONLY $3500

cover open or closed, providing the ultimate versatility in cargo management The Trax Rail System will work with most T-slot accessories from Rhino-Rack

helen88 slot BAK Industries Revolver X4s Tonneau Cover with T-Slot Rails; No Drilling or Modification Required; Compatible with BAKBox2; Manufactured with Patented

we 77 slot cover by combining the Trax Rail System with the t-slot accessories Product Features Low Profile Design; Increased Cargo Capacity Above and Below the Cover