Long trough, for all U-clamps, to increase the contact surface. For use in functional maintenance, please observe additional regulations! for U-clamp: B ... BA ... BU ... BF ... BW ... in functional maintenance approved for: B ... without counter trough BU ... without counter trough for C-profile rails with slot width: 11 - 12 mm 16 - 17 mm 18 - 22 mm for flat iron with material thickness t: 4 - 12 mm for angle steel, U-iron with a leg length: 40 mm and t= 4 - 6 mm Dimensions (approx. dimensions) for cable Ø: 51 - 55 mm Length L: 200 mm Material: Steel, strip galvanized in accordance with DIN EN 10346