Ideal wherever there is a need to reach bulky materials. Rolls easily into position and locks firmly to the floor for maximum safety. First step activates the floor locking mechanism (step offand kick release to make the ladder mobile). Casters retract under operator's weight, rubber feet drop down. Non-clogging slip-resistant steel steps. Frame is rugged welded 1" round steel tubing. Durable Kleton blue enamel finish. CSA certified to the ANSI standard A14.7. Ladders are not to be used as work platforms. Step Size: 30" x 8". Top step size: 30" x 16". Base Dimensions: 38" x 60" x 113".