This Xtend & Climb ladder features heavy-duty construction and is designed to hold up to professional use, making it a great choice for contractors or the serious do-it-yourselfer. The ladder extends in 1-ft. increments and folds to 36 1/2in.H when not in use, so it stores virtually anywhere. OSHA and ANSI approved. It features rugged aerospace engineered 6061 aluminum alloy construction with a clean-touch anodized finish. Also includes a no-pinch closure system, nonslip end caps and integrated carry handle.