3M Speedglas 527070 Outer Lens Heat Resistant - 9100 Series
The Speedglas 9100 heat resistant outside protection plate is designed to protect the filter from spark and spatter. Failure to use an outside protection plate with the filter voids the warranty if spark or spatter contaminates the glass. Pkg of 10.
Replacement spare part to the original protection plate if any pits or scratches occur.
For maximum safety and comfort, make it a habit to check your equipment regularly. Replace worn out or damaged parts.
Regularly clean with a soft cloth and replace if any pits or scratches occur.