Mfg. Part No.: 16073 Brand: Kimberly-Clark Replacement Welding Helmet Safety Plates f/W20, 4 1/4″x2″, Clear, Polycarbonate. Replacement safety plates for welding helmets. Durable polycarbonate construction. Scratch-resistant. Lightweight. Color=Clear. Length [Nom]=2 in. Lens Coating/Shade=Clear. Lens Material=Polycarbonate. Lens Tint=Clear. Material=Polycarbonate. Series=W20. Thickness [Nom]=0.060 in. Type=Safety Plate. Used With=W20 Welding Helmets. Width [Nom]=4 1/4 in. Window Size=4 1/4 in x 2 in. Wt.=0.03 lb. .