5-1/4″ Window Width x 4-1/2″ Window Height, 9 to 13 Shade Auto-Darkening Lens, Fixed Front Welding Helmet – Black Nylon Clear Lens | WH-310-AD

WH-310-AD 4.5X5.25 AUTO DARK BLK Auto darkening lenses increase the lens shade as the flash intensifies They are solar powered or are used with batteries Nylon is composed of a matrix of synthetic polymers It is breathable, lightweight and heat resistant.