Features and Benefits: 2.125" x 4" viewing area; Fits Shop Iron Welding Helmets # 41265, 41266, 41267, 41278, 41279, 41288 & 41290; Clear cover safety welding lenses; Protect shaded lens from spatter and debris; Includes 1 inner lens (4.25" x 2.25") and 1 outer lens (4.5" x 3.5");