CEP932-107-10 - 4-1/2" x 5-1/4" Shade 10 Heat-Treated Glass Welding Filter Plate

Superior Optical Clarity with Traditional Glass

For professional welders who demand the absolute clearest view of the arc, the Lense Filter Plate Shade 10 4X5 Glass remains the gold standard in passive eye protection. While auto-darkening technology has become prevalent, many seasoned fabricators still prefer the consistent, distortion-free optics of a high-quality glass filter plate. This lens is precision-manufactured to provide a fixed Shade 10 darkness, which is the industry standard for a wide variety of welding processes, including Shielded Metal Arc Welding (SMAW) and Gas Metal Arc Welding (GMAW) at moderate amperages.

The lens measures a standard 4-1/2 inches by 5-1/4 inches, commonly referred to as the "4x5" or "big window" size. This larger viewing area offers excellent peripheral vision and situational awareness compared to smaller 2x4 lenses, making it ideal for shop environments where seeing the joint and the surrounding workpiece is critical. The glass itself is heat treated, a process that significantly increases its thermal resistance. This ensures that the lens will not warp or distort even when subjected to the intense heat radiating from heavy welding applications.

One of the primary advantages of glass over polycarbonate is its surface hardness. This filter plate resists scratching from cleaning and pitting from spatter better than plastic alternatives, ensuring a longer service life with proper care. However, because it is glass, it is designed to be used as part of a complete lens assembly, sandwiched between clear safety cover lenses (polycarbonate or CR39) to meet impact safety standards. This configuration protects the expensive filter plate from direct spatter while the filter plate protects your eyes from harmful UV and IR radiation.

Whether you are restoring an older helmet or simply prefer the reliability of a fixed shade, this Shade 10 glass plate delivers the performance you need. It eliminates the variables of batteries, sensors, and switching speeds, providing instant, fail-safe protection the moment you strike an arc.