6200D series super heavy duty fiberglass ladder extension. Meets or exceeds CSA Grade 1AA, ANSI Type 1AA. Durable non-conductive fiberglass side rails in high visibility safety yellow. Riveted rung to rail design maintains continuous strength of fibers and allows for easy repair. Slip-resistant serrated rungs for safe climbing. Top cross over bar allows for ladder to be raised or lowered from front and provides torsional stiffness. Premium heavy duty rung locks for durability. Exclusive “1-Piece” foot assembly with spur wheel provides unequalled strength, durability and torsion resistance.