Experience has shown that lighter filters may be used when the arc is hidden by the workpiece. Phillips Welding Lens - Small 2 x 4.25 (Gold), GOLD Coated and Available in : 9, 10, 11, 12 or 14 shades. Harris Shade 12 Welding Helmet Gold Filter Plate Lens 4.5' x 5.25'. In oxyfuel gas welding or cutting where the torch produces a high yellow light, it is desirable to use a filter lens that absorbs the yellow or sodium line the visible light of the (spectrum) operationĢ These values apply where the actual arc is clearly seen. LENS 4 X 5 SHADE 12 ORS 901-932-107-12 19.44 Welding Supplies 1170 FIBREMETAL LENS GASKET 1170 2.73 Welding Supplies NEOPRENE STRAP ORS 280-1PS FM HOOD STRAP 2.02 Welding Supplies 17.38. Filter lenses will only protect your eyes if you use the proper minimum shade and if. Gas metal arc welding and flux cored arc weldingġ As a rule of thumb, start with a shade that is too dark, then go to a lighter shade which gives sufficient view of the weld zone without going below the minimum. The hazard assessment for your welding, brazing, or torchcutting.