Variation Class 3

Luminous transmittance variation is concerned with how consistently the auto-darkening function of the lens works. Variation Class 3 welding helmets generally offer reliable protection of your eyes and face from mechanical and thermal hazards, but have a relatively low score in terms of luminous transmittance. If you have any questions or need a product recommendation, do not hesitate to contact our customer support team on 020 7501 0594 or via our Contact Us page.