Description Neilsen 4ftx6ft Fiberglass Welding Blanket Protective Cover Heat Fire Resistant Welding Blanket Heat Treated Fiberglass Size:4’x 6’ thickness:0.6MM working temperature:550C brass grommets on each side This welding blanket made from heavyweight, flame-retardant fiberglass providing protection to equipment and work areas from damage from sparks and spatter. Size: 4FT x 6FT Thickness: 0.6mm Working temperature: 550 Brass grommets on each side Welding blanket is a must have piece of safety equipment if you are doing any type of welding.