Honeywell Safety Replacement Safety Plate, 4-1/4 in Window Height, 2 in Window Width, Clear Lens Shade, Polycarbonate.Ideal for more experienced welders, the HW200 auto-darkening ADF welding helmet incorporates a high quality filter with a sleek and lightweight helmet shell and features solar-powered adjustable shade 9-13 ADF technology for advanced welding applications. The HW200 also features sensitivity and delay adjustments for customizable filter settings. When a welding job requires more than a standard passive filter, ADF helmets provide greater protection, superior comfort and eliminate the need for constant adjustments, allowing for more time spent welding.