Designed to be stable on uneven surfaces and offer the ultimate in durability and flexibility. Developed for use in the most demanding environments, thisr industrial grade combination ladders provide you a triple ladder, an A-frame stepladder, an extended stepladder, a stairwell ladder combined with a levelling safety base in one robust product. The stabiliser bar at the base of the ladder adjusts from a minimum 830mm to 1280mm when fully extended.