"Cotterman rolling ladder features large casters and Safe-Lock security. Steps and platforms are made of slip-resistant, expanded metal. Durable gray enamel finish. Constructed with 1in. O.D. steel tubing to meet or exceed all OSHA and ANSI standards. This unit includes CAL OSHA rail kit required for California orders. Capacity lbs. 450, Material Type 1 in. O.D. steel tubing, Step Depth in. 7, Step Type Expanded metal, Rail Height in. 30, Top Width in. 26, Finish Type Gray, Top Step Height in. 80, Caster Type Safe lock, Caster Size in. 4, Dimensions W x D x H in. 32 x 58 x 110, Base Size W x D in. 32 x 58, Steps qty. 8, OSHA Approved Yes California. 8 steps Handrails Safe-lock caster system Built-in CAL OSHA rail kit"