The Little Giant Alta-One-Inch hinge locks and telescoping sides let you securely use the Alta-One as an changeable extension ladder, A-frame ladder, staircase ladder, and as a trestle-and-plank scaffolding system. Wide-flared legs, rubberized feet, and high-excellent construction present you with unequaled stability in any of its configurations. all because it is built from aerospace-grade aluminum, the Alta-One is ultra-light and ultra-strong. The Alta-One is rated to hold as much as 250 lbs. on both sides, so it�s ideal for medium-sized jobs. The Work Platform, incorporated on this model, presents to you a tough, large standing platform for improved balance and stability. Aircraft-grade aluminum, wide-flared legs, and high-high quality construction give solid stability. It can be utilized in as much as 33 configurations, including A-frame, extension, 90-degree ladders, and three different scaffolding positions. The quality simply goes beyond all OSHA and ANSI standards.