I-beam aluminum track is precision extruded for smooth operation and
1" [25mm] diameter nylon encapsulated ball bearing wheels means
smooth rolling and long life. Removable hanger plates allow easy
installation/removal of heavy doors and height adjustable hanger shafts
allows precision door alignment.
jamb mount door guide effectively holds door in place without binding
and insures smooth door operation.
Johnson hardware is rigidly tested to meet ANSI standards.