The Alu RS track (Aluminium, capable for Roof and Sidewall mounting) has a flat top and back side, exactly 90 degrees, which makes it perfectly suitable to mount (screw/glue*) in the top corner but also to the roof.
The track has stainless steel locking strips which slides into the design of the track to catch the locking fingers of the SmartLift MK8 balancer. It's one track for all mounting purposes and allows for maximum loading height with existing parts in the top corners.
It's designed for optimal glueing performance.