Top Roll Divider Curtains roll neatly on the drive pipe so the stacking dimension is only 356 mm (14”). It does not require belts, cables, or complicated torsion arms. Unlike similar systems, the electric winch is located at one end of the curtain. This simplifies the wiring diagram making the installation more economical. The innovative external winch provides for optimal cooling, as opposed to internal tubular motors which require rest stops to prevent overheating. These curtains are available in a combination of materials from vinyl to vinyl coated breather mesh.