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3M Speedglas™ SL Welding Helmet, 44 x 93mm Lens

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3M™ Speedglass SL Welding Shield

From 3M™, the Speedglass SL Welding shield is designed to fit welders who demand, low weight and optimum comfort. At a mere 360 grams - including auto-darkening filter - the Speedglas SL welding helmet is 25% lighter than any other Speedglas model. For high-quality and comfortable protection in many welding and grinding applications, the Speedglas SL is ideal.

Features and Benefits

• Delay function to set the dark-to-light opening time
• The sensitivity of arc detection can be adjusted
Grab and Go: A motion sensor automatically turns ON the welding filter when you pick up the helmet

• Appropriate for most arc welding processes - such as MMA, MIG/MAG, TIG and plasma welding

• Our narrowest helmet: perfect for many super tight spaces

Safety Information

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


Welding helmets, or welding hoods, are essential personal protection equipment wherever arc welding takes place. The helmet has advantages over goggles in that they also protect the face and neck from flash sparks, and can even serve as face protection PPE when grinding. The 3M™ Speedglas™ 9100 FX Air Welding Helmet is designed to be fitted with auto-darkening lenses. Auto-darkening lenses have advantages over static polarized viewing lenses, in that you can see as normal when not welding without having to adjust your mask. The viewing lens only darkens in response to the light given off from arc welding. In many countries, an auto-darkening welding mask is an industry safety requirement wherever welding equipment is used, and they are regarded as a standard piece of safety equipment for welders.

What are the disadvantages of auto-darkening welding masks, compared with fixed-darkness masks?

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.

TypeWelding Helmet
Lens Size44 x 93mm
SeriesSpeedglas™ SL
Auto Darkening LensYes