This Velocity M13 aluminum articulating ladder system from Little Giant has 16 unique configurations. You can adjust it to an A-frame, extensions, 90-degree or scaffold system, and it features a dual-pin hinge and Rock Locks for quick adjustments and aerospace-grade aluminum construction that is 20% lighter. It has wide-flared legs with co-molded snap-on feet, and tip and glide wheels. A-frame height: 3.1’ to 5.1’. Extensions height: 7 to 11 feet. Weight capacity: 300lbs.