Werner 24 Foot Aluminum Extension Ladder is designed for mechanics and industrial use, featuring a flat D rung that provides secure footing and a 1-3/4 inch flat-top rung for added stability. Constructed with 3-inch stacked full I-beam rails, this ladder exceptional strength and durability. It includes sliding glides and die-cast aluminum spring-loaded gravity locks that fully engage with twist-proof performance-type rungs, ensuring safety during use. The ladder is equipped with a 5/16 inch polypropylene continuous rope for smooth operation and heavy-duty shoes that position the first rung just 6 inches from the ground for easy access. This ladder meets OSHA standards and is UL listed and labeled for quality assurance. It carries a Type IA extra heavy-duty industrial rating with a load capacity of 300 pounds, making it suitable for demanding tasks. The rope and pulley system is included on ladders 20 feet and larger to facilitate extension. Model Number: D1524-2