"Vestil alternating-tread stairs have a unique design that offers a shorter span than traditional steps. Ships knockdown for lower freight costs. U.S.A. Top Width in. 23 1/2, Base Size W x D in. 23 1/2 x 52 3/4, Step Depth in. 10 1/2 excluding top step. Alternating-tread step design offers a shorter span than traditional steps Welded steel construction with bolt-on handrails Handrail on each side of unit for safety Includes dual safety chain at the top of the stairs Formed steel steps with raised surfaces for better traction Powder-coated safety yellow finish Ships knockdown for lower freight costs"