They are Ideal for a wide variety of warehouse, stockroom, maintenance and shop floor applications. Rugged square tube construction Is 40% stronger than round tubing and welded sub assemblies for extra strength. Has an Ezy-Lock that features 4 casters which are released putting ladder legs firmly on the floor when pressure is applied to bottom step. Steps are 7" deep with a deeper 14" top step.Perforated Tread for slip-resistant footing. HEIGHT INCHES TO TOP STEP. EGA Steel Industrial Rolling Ladder 8-Step, 30 Wide Perforated-450lb. Cap" is in sale since Monday, March 19, 2018. This item is in the category "Business & Industrial\Material Handling\Ladders, Scaffold & Platforms\Rolling Ladders & Scaffolds". The seller is "y2-supply2013" and is located in USA. This item can be shipped to United States.