Traction-Tred® 1-3/4"W deeply serrated aluminum flat D-rung. Polyethylene rung wear sleeves. Combination aluminum rail end shield and shoe with extruded rubber slip-resistant shoe pad and steel spur plate. Twist-Proof® due to exclusive Alflo® rung joints. Pre-pierced holes at top of fly for field installation of accessories. For ladders 40' rails are 4", flange 1-3/4", and flat type D-rungs 1-3/4". Fly section width for 40' ladders: 16-3/4" outside rail, 13-1/4" inside rail. Base section for 40' ladders 20-7/8" outside rail, 22" outside shoes. Meets ANSI and OSHA Standards. FOB Shipping Point.
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