External corner panel, smooth, for device duct external corner 90°, the potential equalization is carried out via the potential equalization cable GSLH... and the joint connector GSTA... (...T60, ...T80, ...T100) / GSVA... (...T70, ...T90) or the potential equalization terminal GPK 63, if these are electrically connected to the duct base, please order separately. VDE certified! Use for: Device duct external corner 90° GKA ... S DKA ... S for cover opening: 78 mm Leg length: 100 mm Surface structure: Visible surfaces smooth Material: Steel, strip galvanized in accordance with DIN EN 10346