Designed for the rigors of light-duty welding, the 615 ArcDefender™ Thermofelt Plumber’s Pad offers a robust solution for protecting surfaces from sparks and spatter. Measuring 12 inches by 12 inches, this FM Approved welding pad is perfect for tight spaces, providing both horizontal and vertical protection. Crafted from 16 oz. Thermofelt, it is non-flammable, non-melting, and non-shrinking, ensuring durability even at high temperatures up to 1800°F. While it excels in safeguarding against light sparks, it is important to note that it is not intended for stress relief and should be used with caution around molten metal.