Corner attachment piece, with corrugated, round and unperforated side rail, with connector holes for the connection, as well as riveted support plate, for wide-span cable trays and wide-span cable ladders, for the cost-effective production of 90° corner and T-connections, width-independent component for combining different widths and outlets and for more flexible design of the route paths during assembly on site, including proportional fastening accessories made of stainless steel. The fitting radius is designed so that the cables can be laid in accordance with DIN/VDE 0298 Part 3. Joints must be supported in the immediate vicinity by an appropriate supporting structure. Can be used for: Wide span cable tray WRL 105... Wide span cable tray WRU 105... Wide span cable ladder WSL 105... Dimensions (approx. dimensions) Height H (clear inside dimension): 106.5 mm External dimensions: 750 mm Inner beam radius R: 500 mm Material: Stainless steel, material no. 1.4301, 1.4303