The Elvex FS18GL Faceshield is a gold and hard-coated Lexan faceshield that resists up to approximately 1800 degrees Fahrenheit of heat. Designed to fit both the Elvex headgear and visor bracket VB-10/20/30 for mounting to safety caps, the faceshield has a 18.5" X 10" X 0.06" viewing area "universal" hole pattern, meaning that it will fit all Elvex carriers as well as many competitive headgear. Lexan is a General Electric brand name for polycarbonate.