System intended for curtains and over-curtains that require an ample overlap. Cord and hand operated. For use with curtains 600 cm w max. and 300 cm h weighing up to 6 kg. The opening can be central, lateral or asymmetric. The system is suitable for ceiling and wall installation. The operating cords run in independent side-by-side channels. Sliding is guaranteed by self-lubricating polyethylene slides or by roller gliders for curtains at the load limit.