"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. Caster Size in. 4, Top Step Height in. 80, Finish Type Gray, Steps qty. 8, Dimensions W x D x H in. 32 x 58 x 110, Base Size W x D in. 32 x 58, OSHA Approved Yes California, Caster Type Safe lock, Capacity lbs. 450, Material Type 1 in. O.D. steel tubing, Rail Height in. 30, Top Width in. 26, Step Type Expanded metal, Step Depth in. 7. 8 steps Handrails Safe-lock caster system Built-in CAL OSHA rail kit"