"Alternating-tread stairs have a unique design that offers a shorter span than traditional steps. Ships knockdown for lower freight costs. U.S.A. Step Depth in. 10 1/2 excluding top step, Rail Height in. 18, Material Type Welded steel, Base Size W x D in. 23 1/2 x 36 1/2, Degree of Angle 56, Step Width in. 9 1/8, Top Width in. 23 1/2, Steps qty. 7, Step Type Steel steps w/raised surfaces, Dimensions L x W x H in. 36 1/2 x 23 1/2 x 90 1/8, OSHA Approved Yes, Capacity lbs. 350, Top Step Height in. 48, Finish Type Yellow powder-coat, Safety Chain Included Yes 2. Features handrail on each side of unit Dual safety chain at the top of the stair and formed steel steps with raised surfaces for better traction"