Electrical insulating matting certified according to IEC 61111:2009 in class 1, with an operating voltage of 7,500 V, a test voltage of 10,000 V and a withstanding voltage of 20,000 V, with permanently vulcanized marking tape. Vulcanized elastomer fine grooved is available in gray or dark gray color, 3.2 mm thick (+ 0.4/- 0.2mm) with average weight 3.6 kg/m2.