Reach the tops of roofs walls and other spots with the Louisville Ladder Extension Ladder (AE2224). The full I-beam design supports up to 300 lbs. while a Quick latch Rung lock system allows for quick and easy height adjustments. The rungs also stay securely in place thanks to strong polymer MAXLOCK rung locks. This 24 extension ladder adjusts in increments of 12 and includes a pulley and rope for additional safety. Mar-resistant end caps help protect hard floors from marks while the swivel shoes provide stability on flat or soft ground. This aluminum extension ladder is suitable for indoor or outdoor use.