Adjusts to A-frame extension and 90 degree laddersLighter than any other fiberglass articulating ladderNon-conductive fiberglass siderailsCas aluminum and triple locking hinge systemHinge lock spreader systemWide-flared base legs with tip and glide wheelsCo-molded snap-on feetA-frame height: 4.5 to 7.5 feetExtension height: 8.9 to 14.9 feetWeight capacity 300lbsANSI rating Type IA - Extra Heavy Duty Industrial