Ideal wherever there is a need to reach bulky materials. Rolls easily into position and locks firmly to the floor for maximum safety. Operates on spring-loaded casters. 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: 22" x 8". Top step size: 22" x 16". Base Dimensions: 30" x 46" x 87".