Steel ball bearing wheel units in a steel casing for use with the Freeslide system. Wheel units should be fitted into the bottom of the BO 634579BP runner section.
Application note:
For guidance only:
A minimum of 1 wheel unit at each end for up to 0.3 sq m of glass
A minimum of 2 wheel units at each end for up to 0.7 sq m of glass
A minimum of 3 wheel units at each end for 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 the frequency of use.
