Cusco 17" World"s Greatest Ladder: * 3 positions as a step ladder * 6 heights as an extension ladder * 3 positions as a stairway ladder * 2 heights as a scaffold * 2 heights as a wall ladder * Box "I" beam aluminum for strength and stability * Designed for multiple uses inside and outside * Flared legs with slip-resistant feet for stability * Positive locking hinges * No assembly required or additional pieces * Mill-finish aluminum * Meets ANSI Type 1A extra heavy-duty industrial workload 300-lb. rating * Cusco 17" multi-position aluminum ladder has a manufacturer"s limited lifetime warranty