Co-ordination Kit for Double Door System With this system, the opening/closing of the two doors in a Classic Double System is co-ordinated. Open or close one door, the other opens or closes at the same time. The system can be retrofitted because the classic pocket system has a patented extractable track that can be removed so that you can install the coordination kit is for use with wooden doors only. PRODUCT FEATURES Can be retrofitted because of the extractable track. Suitable for use with the Classic Double Pocket Door System and the Classic Double Pocket Door System - Wiring Ready. Open or close one door, the other opens or closes at the same time. The system can be retrofitted TECHNICAL Note: A double door co-ordination kit comes with one soft close. This will slow down and close them if the doors are no more than 20Kg each. Heavier doors will just be slowed down. If your doors are over 20Kg each then you can purchase an additional soft-close. If you intend to use the co-ordination kit with the BIAS soft-close then you will need to purchase two BIAS soft-closes if your doors are over 20Kg each and only one if the doors are under 20Kg each. The cable used in the co-ordination system has been specially developed for its strength and resistance to stretch. It's a 132 strand, 2mm stainless cable complete with a zinc-plated 1.5mm spring. The cable is attached to the door by means of a bracket installed centrally on top of the door.