Fiberglass Manhole Ladder, 10-ft, Duty Rating T IAA, 375-lbs Load Capacity The Louisville 10 foot Manhole ladder has a 375lb load capacity, ANSI Type IAA rated. It features double side 3ft plastic rail protectors to avoid manhole rim damage, heavy duty gussets under steps and new heavy-duty 180? boots that allow you to work on either side of the ladder with thick non-marring thermoplastic elastomer tread bonded and mechanically fastened to the upper boot. The polypropylene copolymer upper boot provides...