"Cotterman rolling welded steel ladders have 450-lb. load rating. Has easy-rolling 2in. spring-loaded swivel brake casters that are standard on the 1- to 4-step models. Steps qty. 3, Step Type Perforated metal, Material Type 1 in. O.D. steel tubing, OSHA Approved Yes, Base Size W x D in. 20 x 26, Caster Size in. 2, Caster Type Spring-loaded swivel brake, Finish Type Gray, Capacity lbs. 450, Top Step Height in. 30, Dimensions W x D x H in. 20 x 26 x 30. Steps and platforms slip-resistant, perforated metal No Handrails Durable gray enamel finish Meets or exceeds all and ANSI OSHA standards"