An essential component for auto welding helmets, these inner protection plates protect the inside surface against sparks and spatter to extend the life of your equipment. Features and Benefits Quick and easy to change over Can be maintained and cleaned with a soft cloth MMM8850428M can also be used to increase +1 dark shade of the welding filter MMM8850428R can also be used to increase +2 dark shades of the welding filter Standards EN 166 EN 166: BT Warnings Failure to use an inside protection plate with the filter voids product warranty should spark or spatter damage the glass Notes Suitable for use with 3M welding filter series: 100, SL, and 10V Can be used with the older welding filter models 9002D and 9002V Regularly clean with a soft cloth and replace if any pits or scratches occur