Carrier rail profiles GN 646.3 are the base components for roller tracks and ball tracks. They are the carrier channels for roller tracks GN 646.1 and for ball tracks GN 646.2 and feature a high degree of stiffness and rigidity.

The carrier profile is designed such that roller and ball tracks and containment edge strips GN 646.4 can be assembled without mounting hardware.

Using connectors GN 646.6 (Type C), the carrier rail profiles can be assembled together, to create longer profile extensions.

The standard lengths match the 270 length of the roller and ball tracks. For type B, the position and edge spacing of the hole pattern is not defined.