Cover insert, one-piece, for device duct vertical corner 90°, with molded potential equalization tabs, cover insert and vertical corner base must be electrically connected, potential equalization is carried out via the potential equalization cable GSLH... and the potential equalization terminal GPK 63 or the joint connector GSVA... (...T70, ...T90), please order separately. VDE certified! Use for: Device duct vertical corner 90° GKV ... S GKVU ... S GKVO ... S DKV ... S DKVU ... S DKVO ... S for cover opening: 78 mm Outside leg length: 105.5 mm Surface structure: Visible surfaces smooth Material: Steel, strip galvanized in accordance with DIN EN 10346