CO-Z 6.6 ft Stainless Steel Modern European Sliding Glass Door Track Hardware Kit Easily transform your door into a beautiful sliding entryway. With this state of the art kit, you can install sliders above the door frame to attach the door to. This will put in place the track needed to allow the door to slide horizontally open and closed. Aas opposed to opening front to back like a conventional swinging door. This is quickly becoming a popular way to close off bedrooms and side rooms in a stunning way.