- Brand:Â Braxton Harris
- Yellow in color. 4″ width, 100 feet length., 12 mil (.25MM) thickness. Tensile strength: 25 lbs / inch, elongation at break: 200%, adhesion to steel backing: 20 oz/inch, dielectric strength: 1250 volts/mil. The physical and performance properties are averages obtained from tests recommended by ASTM D-1000. A particular roll may vary slightly from these averages.