The ExtensionPLUS X4 triple section combination ladder features rigid box section stiles that are designed to ensure the ladder is lightweight but strong. With slip-resistant D shaped rungs and manual thumb operated locking catches to prevent sections separating, this ladder is ideal for use in a professional environment. The versatile multi-functional design of the X4 enables this ladder to be converted into 4 different modes to provide greater flexibility around the work site. Conversion modes include a stepladder, freestanding extension ladder, stairwell or extension ladder mode. Approved to the latest EN131 standard. For Professional Use.