RX anti-slip protection for support rail W: 54 mm, Anti-slip protection for component adapters, Polyamide (PA 6) Fire behavior corresponding to UL 94, RAL 9005, 54 mm, 2.13 in, 39269097, 8 pc(s), 0.088 lbs, , RiLineX displacement protection for device adapter support rails, width 54 mm. Suitable for 60 mm busbar systems. Recommended for vertically mounted base systems or complete board.