Electrical insulating matting certified according to IEC 61111:2009 in class 4, with an operating voltage of 36 000 V, a test voltage of 40 000 V and a withstanding voltage of 50 000 V, with permanently vulcanized marking tape. Vulcanized elastomer fine grooved is available in gray color, 4,5 mm thick with basic weight 6,1 kg/m2.