608938301086The Perfect Combination of Features, Quality, and PriceLCD Auto Darkening Lens - 3.93" x 2.64" viewing area, 10.4 Square Inches! Almost DOUBLE the size of standard viewing windows. Check out the competition...Their viewing windows will typically be 4-6 square inches. Be careful if they only list the "filter size," because this includes the solar panel and housing unit, and IS NOT the viewing window size! Brand - Rhino Welding HelmetsModel -