SENTINEL™ A50 Front Cover Lens, Impact Resistant, 4 7 10 in W x 6 7 10 in L, Polycarbonate, Amber no checkout and D3 rating chemical splash IRUV and D3 rating chemical splash IRUV filter additives in shade 3 and 5 provide additional infrared and ultraviolet radiation protection Ideal in heavy manufacturing All white texture for excellent marking quality Grain cut to ensure good strength and long service life Marks will not contaminate welds and are easily removed Low water content for increased hardness and resistance to breakage ultimately increasing visibility and clarity Genuine ESAB® clear front cover lens for your ESAB® Sentinel™ A50 auto darkening welding helmet Spherical front cover replacement lens Sweeping design across the helmet allows more natural light to get in when welders are in grind mode