17-ft., aluminum, Type IA multi-purpose ladder, 300-lb. duty rating. Quick-activating snap lock hinge, one-man set-up, heavy-duty locking pins, multi-positioning. Meets OSHA, CSA, & ANSI standards. Will work as a 4-ft.-7-ft. step ladder, 9-ft.-15-ft. extension ladder, or 1-ft.-3-ft. scaffold. Extra-wide flared bottom for stability. Features a telescoping design for maximum versatility.