This type of ladder is typically made from lightweight yet robust aluminium, designed for professional or heavy-duty home use. Key specifications and features often include: Material: Aluminium Sections/Rungs: 3 sections, 9 rungs per section Max Load: Around 150 kg Extended Length: Approximately ^6m meters (around 27 feet) Certifications: Often certified to standards like EN131 Professional Features: Includes stabiliser bar and safety locks