Steel ball bearing wheels in steel casing, for use with the Heavislide system. The wheel units should be fitted into the bottom of the BO 634346BP runner.
Application note:
For guidance only:
A minimum of 1 wheel unit at each end up to 0.6 sq m of glass
A minimum of 2 wheel units at each end up to 1 sq m of glass
The number of wheel units required for any individual system will depend also on the size of each door, the supporting structure, and frequency of use.