"Alternating-tread stairs have a unique design that offers a shorter span than traditional steps. Ships knockdown for lower freight costs. Safety Chain Included Yes 2, OSHA Approved Yes, Steps qty. 7, Dimensions L x W x H in. 41 5/8 x 23 1/2 x 90 1/8, Step Width in. 9 1/8, Capacity lbs. 350, Step Type Steel steps w/raised surfaces, Rail Height in. 18, Base Size W x D in. 23 1/2 x 41 5/8, Top Width in. 23 1/2, Degree of Angle 56, Material Type Welded steel, Top Step Height in. 48, Finish Type Yellow powder-coat, Step Depth in. 10 1/2 excluding top step. 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"