Hyper-versatile, convertible ladders consisting of 2 or 3 sections can be adapted to any situation on a building site. Usable as a hand-operated extension ladder, they allow access to great heights. Convertible ladders are also self-supporting, in the stepladder position, they can be used in the center of a room to reach ceilings. The 3-section versions enable you to reach even greater heights in the aerial position by deploying the 3rd section from the stepladder position. They are available with stabilizer bars or flared bases recommended for outdoor use.