T-slot rail on Tonneau cover?

tonneau covers with tslot tracks   Dan tonneau cover with t slot

They basically won't work with a bed cover, That's why some covers have the T slot tracks on them It's so you can run both a cover and a rack

The RetraxPro XR tonneau covers incorporate a unique Trax Rail System that works with most T-slot Yakima Skyline Complete Fixpoint, Tracks, Custom Roof Racks  RetraxOne XR and the RetraxPro XR are amazing racks that come with a T slot track for any roof rack install The RetraxOne is made of a

free download slot machines games Retractable tonneau cover with T-track rails lets you add a truck bed rack for carrying additional gear It has a 450 lb load capacity so you can use it to hold TruXedo makes T-slot rails that work with many tonneau covers which should give you more options than the expensive Retrax XR series