New age and magical Plisse Double system is the most technically advanced system in the world. The system was developed by Japanese and has been perfected by Germans. The caterpillar chain helps the system to operate without an U tube fixed on the floor. The mesh moves on a guide strop which is 4 mm thick and allows movement of people without any barrier. Size tolerance in Plisse Double is restricted and a proper calculation should be done before a system is recommended.