The Speedglas 9100X inside protection plate is designed to protect the inside surface of the filter from spark and spatter. Failure to use an inside protection plate with the filter voids the warranty if spark or spatter cause damage to the glass.
Protect the inside surface of your welding filter from sparks and spatter, with 3M™ Speedglas™ Inner Cover Plate, 428000. It’s designed for 3M™ Speedglas™ Welding Filter Series 100, SL and 10V as well as the older welding filter models like Speedglas 9002D/9002V filters. Our 42 mm x 91 mm inner cover plate replaces worn or damaged parts and ensures you maintain the correct level of comfort and protection. Use as a replacement when your orginal plate becomes deeply pitted, scratched or too dirty to clean with a soft cloth or lens paper. Make it a habit to regularly clean with a soft cloth and replace if any pits or scratches occur. Plate marking 420200. There are 5 in each pack.