Experience superior eye protection with the Weldmark Filter Lens, designed specifically for welding helmets and goggles. This rectangular lens, measuring 4.25 inches by 2 inches, is crafted from heat-treated, hardened glass that is optically correct, ensuring clarity and safety during your welding tasks. With a shade rating of 9, it provides essential protection against harmful ultraviolet and infrared rays, adhering to industry standards such as GGG-H-211D and ANSI Z87.1. The lens features smooth rounded edges for added comfort and safety, making it an ideal choice for both light and heavy-duty welding applications.