"Alternating-tread stairs have a unique design that offers a shorter span than traditional steps. Ships knockdown for lower freight costs. U.S.A. Base Size W x D in. 23 1/2 x 36 1/2, Degree of Angle 56 step angle, Dimensions L x W x H in. 36 1/2 x 23 1/2 x 90 1/8, Material Type Welded steel, Portable or Stationary Stationary, Rail Height in. 18, Safety Chain Included Yes 2, Step Depth in. 10 1/2, Step Type Steel steps w/raised surfaces, Step Width in. 9, Steps qty. 7, Top Step Height in. 48, Top Width in. 23 1/2, Finish Type Yellow powder-coat. 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"