Read more Notrax Switch Board Mats Switchboard matting insulates workers to prevent electrical shock. High-profile top surface enhances traction. Rib design facilitates repetitive pivotal movement. Each square foot is tested in conformance with ANSI/ASTM D178-01 specifications. Made in USA.Tested Class 2 Max Voltage 20,000 volts. Available in 3ft x 5ft mats and other dimensions as well.