6100 series super heavy duty straight ladder. 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. Black ABS, high impact non-marring end caps. 6100 Series features the exclusive “1-Piece” foot assembly with spur wheel providing unequalled strength, durability and torsion resistance.