Extends and locks by the foot with easy no pinch closure system. Opens and closes in seconds. * Folds to a very portable size of 34" x 19" x 4" thick, Very strong locking clips, 300lb working load rating * Extends to 149" tall x 14" wide. (11.5" step height), Extends in 1 foot increments * Strong aluminum construction, yet lightweight (25 pounds), Integrated carrying handle heavy duty closure strap * Number of height adjustments: 11