XL-C 7164 Justo Slide Double DormotionUnits are designed for a 50kg glass/wood sliding panel with the feature of having both soft closing and soft opening operation on the sliding door panel. The system contains a DDM (Double Dormotion Unit) which has a spring mechanism for making the door to shuts or open slowly when it touches the activator or damping unit without sudden impact force. The JS 80 kg DDM package contains 1 No's of Double Dormotion unit, activator plate, It is very easy & flexible to mount and works on a silent and easy operating system, with soft-closing or soft-opening operation. The list of benefits for this product is also quite extensive. For traders, it is a complete solution for single sliding door panels, and soft closing/soft opening is also included in the standard package. For Installers, It comes with faster installation with suitability available for both wall or ceiling mounts. For the architects/specifiers, this product provides that premium-ness to suit the customer's needs making it suitable for modular, residential & commercial use. And at last, It is a superior quality item tested at high standards of quality, durability, and ease of handling.