Fully Endorsed by European Standard EN 131 Designed for:Wide range of application from changing a light bulb to factory access equipment. Ideal for architectural renovation works FeaturesAvailable from 8 to 16 rungsHandy for transit and storageNew revolutionary quick0activating hinge provides high speed conversion and rigidity eliminating the use of conventional spreader.Can be used as self-supporting ladder, lean to ladder or trestle in up 10 configuration.Rigid box section stile provide superior strength, spreaded legs provide higher stability