WARNING: Metal ladders conduct electricity. Do not use where contact may be made with live electrical circuits ANSI Type 1A, Extra Heavy-Duty Commercial 300-lb. duty rating OSHA Compliant Large 14-1/2w x 12-1/4d top platform step; steps have nonskid treads. Folds for easy storage. Durable, tubular steel frame forms handrail and knee brace. Gray Opti-Bond™ powder coated finish.