Filter Size 4-1/4 inch 3-1/2 inch 23/64 inch (110×90×9mm) View Window Size 3-55/64×1-5/8 inch (98×41mm) Working Temperature ~5~55 degree Light Shade 4 Dark Shade#7-14 Response Time 0.06ms Weight 59/64 Lb (0.42 Kg)/1 pc Working Range Suitable for any welding