Poorly made. Not very stable. Can't see how this is rated for 330 pounds. Arrived with one of the X-braces on the rear not secured to the bottom rail. Main problem is the the rear needs to be attached to the front so as not to splay out and move as you step up the ladder. Gotta love Wayfair Customer Service!  Immediate full refund and no need to return the ladder.  Hope they do better at evaluating items like this and not offer unsafe ladders.