... filters5) Gold-plated or silver-plated welding filters also available MD-0385 TECHNICAL SPECIFICATIONS Viewing Area: 92 x 42 mm Size ... -2000nm 0.002% Operating Temperature: -5 to 55 (23 to 131) Storing Temperature: -20 to 70 (-4 to 158) We supply ... , welding product, mask, welding helmet) Solar Auto-Darkening Welding Helmet MD 0385