Tricam AL-17 Gorilla Ladders 17-Foot Aluminum Multiposition Ladder ANSI Type IA 300-Pound Capacity 4 true functions: stepladder, extension ladder, stairway ladder, and scaffold bases 17 unique positions Easy-to-use, heavy-duty locking hinges Type 1A ANSI Duty Rating at 300-pound capacity So versatileit's the only ladder you'll need