Electrical insulating matting certified according to IEC 61111:2009 in class 3, with an operating voltage of 26,500 V, a test voltage of 30,000 V and a withstanding voltage of 40,000 V, with permanently vulcanized marking tape. Vulcanized elastomer fine grooved is available in gray color, 3.5 mm thick (+0.6/-0.2mm) with basic weight 5 kg/m2.