Attachment T-piece, heavy-duty design, with unperforated side rails but with connector holes for the connection and with integrated joint connector for the T-shaped connection, for the cost-effective production of 90° T-outlets and crossings, width-dependent in the main direction, for walkable cable trays, including proportional fastening accessories. for walkable cable trays: 110 mm edge height Dimensions (approx. dimensions) H x W (inside): 110 x 400 mm Material thickness t: 2 mm Inner rail radius R: 138 mm Material: Steel, strip galvanized in accordance with DIN EN 10346