Old World A1V181 18-Inch Winter Features a Heavy-Duty Steel Frame Construction that will NOT Twist, Warp, or Crack Offers a Fully Enclosed Wiper Frame that Keeps Out Ice, Sleet, and Snow Includes a Heavy-Duty Design Rated for Severe Weather Conditions Features an Extra Large Rubber Wipe Surface for Improved Performance Available in Select Sizes from 16 to 28-Inches