3M Speedglas™ SL Welding Shield, Auto-Darkening Lens, 93 x 44mm Lens

This welding mask is designed for use with the SL welding helmet as either a repalcement or standard option. As part of a lightweight, versatile welding protection solution, this welding shield is ideal.

• The Speedglas SL compelte welding helmet is also available 187-9048

• Four sensitivity settings
• Appropriate for most arc welding processes
• Five adjustable dark shades 8-12 and a light shade of 3

When combined with the SL Speedglas Welding Mask, this welding shield is able to be used for the following welding applications;
• MMA
• MIG/MAG
• TIG
• Plasma welding

• For maximum safety and comfort, make it a habit to check your equipment regularly.
• Be sure to replace worn out or damaged parts.

"There are two main types of welding mask- those that have a fixed-darkness viewing portal, and those that have an auto-darkening viewing portal. Fixed darkness usually have a flip-up face shield, so that you can see normally when you are not welding, and then nod your head to put the mask in place once you are ready to weld.

Auto-darkening helmets use a polarizing filter that automatically prevents harmful flash burn to the user. This has the advantage that the wearer does not have to adjust their helmet for working, saving them time and effort. As they do not need to be adjusted, they reduce the risk of exposure to harmful light.

The main disadvantage of a darkening welding helmet is that they are often more expensive than their fixed-darkness counterparts. It is important to choose the welding mask that is best suited to the job at hand."