Ladders Come In A Range Of Styles To Suit The Different Jobs To Be Used For: 1. Single Pole Ladders (maximum length 9 meters) 2. Extension Ladders (total length 15 meters) 3. Step Ladders (maximum height of 6.1 meters) 4. Dual Purpose Ladders (step-ladder hinged to provide an extension) 5. Platform (podium) Ladders.