The T7412 Fiberglass 12 ft Twin Step Ladder features a duty rating of 375 pounds per side of the ladder. Designed for one or two-person jobs, the T7400 ladders have heavy gauge aluminum tops and feature heavy duty internal spreaders to resist damage around the worksite or in transit. The GLAS*MARK Violater stripes on the rails make the ladder more visible and the Edge bracing system and external rail shields add to the long lasting durability of these ladders. Fiberglass rails are non-conductive for working near electricity.