Werner® 17' Telescoping Ladder, 300 Lb. Capacity, Aluminum

Quickly converts 20 working heights or positions, including a twin stepladder (4' to 7' high), extension ladder (8' to 14' high), stairway stepladder (5' to 7' high) and self-support (1' to 2' high), 2-scaffold base (plank and tied downs not included). Features smooth curved rails for comfortable climbing, extra wide flared bottom for firm support, slip-resistant feet and double-riveted steps for long-lasting durability. Holds 300 lb. Aluminum professional grade ladder consists of 3 sections and 2 different locking mechanisms. The ladder's outer sections allow the ladder to telescope and change heights in all the configurations, besides the scaffold mode. Adjust height quickly with spring-loaded "J" locks, 2 each on either side. Operate the spring-loaded "J" locks by pulling straight out and then rotating them away from the holes in the rails. Each "J" lock works independently so you work the lock with 1 hand while holding the ladder with the other.