Louisville Aluminum Articulated Folding Ladder 13-Foot, Duty Rating 300-Pounds, #L-2092-13 Aluminum is durable and lightweight 300 Lbs, load capacity, includes weight of user and tools Easy hinge durable zinc plated steel hinge that features a positive acting lever for smooth and consistent locking and unlocking of the ladder sections, allowing the easy hinge to be positioned at 180, 105 and 40 degree angle Wide 14-inches to 23-inches spacing between the side rails allows a comfortable working space The ladder meets or exceeds the safety standards set by ANSI, American National Standards Institute and OSHA, Occupational Safety and Health Administration