3ML-Series Inner Shroud L-226-2 is used with a choice of outer shrouds to help provide the user of the 3MHelmet L-901 and 3MHelmet L-905 with proper respiratory protection.
3ML-Series Outer Shroud L-227 must be used with the 3ML-Series Inner Shroud L-226. It provides the user of the 3ML-Series Helmet L-901 and L-905 with proper respiratory protection in welding and...