This pack of five replacement inside cover lenses (part number 528025) is designed specifically for 3M Speedglas welding helmets, compatible with models 9100XX, 9100XXi, and the G5-01 auto-darkening filter. These inside lenses serve as protective shields for the inner side of the welding lens.

Inside cover lenses are essential for maintaining the clarity and longevity of your Speedglas welding helmet by protecting the inner lens from scratches, sweat, and general wear and tear. Regular replacement helps ensure optimal visibility and performance during welding tasks.

Recommended replacement is approximately once a month, depending on usage intensity. The inner cover lenses measure 117 x 77 mm, fitting precisely within the specified Speedglas helmet models.