Cover for riser, with captive pre-assembled twist locks, cover for cable tray riser with 85 mm edge height. Due to external influences, such as wind loads, use outdoors is only possible with additional security (self-tapping screws, steel band, etc.). Twist locks RDRS 2 can be used for additional requirements. for cable tray riser: RSD 85. ... Dimensions (approx. dimension) B (inside): 204 mm Material: Steel, strip galvanized in accordance with DIN EN 10346