Cotterman welded aluminum rolling ladder is up to 50% lighter than comparable steel ladders. Aluminum is clean and corrosion-resistant. 350-lb. load rating. 7D steps, 14D top step, no handrail. Serrated, open grip tread allows liquids to drain quickly. For oily, wet, or outdoor environments. Provides maximum slip resistance in most environments. Spring-loaded casters help lift ladder off its legs when stepping off. Meet OSHA and ANSI standards. Note: A Cal/OSHA compliant unit may be substituted for ship to addresses into the State of California. This listing is for each. Technical Specification Step Stool Product Group Rolling Platform Number of Steps 1 Overall Height 12 Material Aluminum Load Capacity 350 lb. Top Step Height 12 Top Step Depth 7 Bottom Width 26 Base Depth 20 Color Gray Finish Brightened Includes 1 Crutch Tips Standards OSHA 1910.29 and ANSI A14.7 Ladder Actuation Spring-Loaded Casters Step Tread Serrated Net Weight 17 lb. Step Width 24