This 4-in-1 Combination Ladder from Werner is a versatile, multi-functional model with four positional modes in one ladder. The ladder also converts to a freestanding extension mode - perfect for when work-at-height needs to be carried out around areas where there is no support to lean an extension ladder. This ladder features a special adjustment capability to allow for secure use on stairs, a stabiliser bar, slip-resistant rungs for comfort and security and heavy-duty feet for added stability and grip. Conforms to the new EN131 standard. For professional use.