Flexirol Centrefold folding door hardware is specifically designed for commercial applications requiring heavyweight, top hung, central folding timber partition doors. Doors are hung centrally and can fold to one of both sides. For applications hinged to the jam 3.5, 5.5 or 7.5 doors can be used with the half door hinged to the jam. For best operation of floating units, 5, 7 or 9 doors should be used. Any access doors should be hinged separately to the jam.