Werner 500-1 Series // Aluminum Single Ladder / 300 lb. Rating

The 500-1 series are one-section round rung straight ladders with a duty rating of 375lb. The exclusive Alflo® rung joint means Twist-Proof® performance every time. The side rails are extra heavy duty I-beam rails and the aluminum round rungs are deeply serrated for slip resistance. The duty rating goes to 300lb with the 18 ft, 20ft and 24ft lengths.