ARC CEILING RAIL FLEXIBLE CURTAIN RAIL 3M Scope of the kit Includes 3m flexible curtain rails 24 track rollers, 9 ceiling supports screws required. Flexible and durable The curved ceiling track system can be easily bent and twisted to accommodate different window shapes and sizes. Made of plastic, not easy to crack or break, can ensure long-term durability. Flexibility and noise resistance Super flexibility is available, so it can work very much no matter how sharp or narrow your angles are. Specially designed track rollers can reduce noise when shifting. Wide application The curved track can be used in U-shaped windows, oval windows, revolving balconies and other landscapes. Easy installation Using the included screws and ceiling brackets allows for easy installation.