"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, Step Type Expanded metal, Material Type 1 in. O.D. steel tubing, Caster Size in. 4, Step Depth in. 7, Top Step Height in. 80, Top Width in. 26, Rail Height in. 30, 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, Caster Type Safe lock, Finish Type Gray. 8 steps Handrails Safe-lock caster system Built-in CAL OSHA rail kit"