The D5916-2 16ft Fiberglass Extension Ladders feature a rounded rail for improved ergonomics while climbing and carrying. The non-conductive fiberglass rails are interlocking and the exclusive Alflo® rung joint means Twist-Proof® performance every time. The Traction-Tred® D rungs are slip-resistant. These extension ladders are lightweight for transporting and maneuvering yet still have a duty rating of 225lb.