RolaStair Folding Rolling Ladder's knock-down design reduces shipping costs by being shipped fully folded. All ladders listed come standard 12" deep top platform. Includes large 2" diameter non-skid, non-marking shoes. Made of a 1" diameter steel tube construction with 42" tall guard rails on all models. Meets or exceeds CAL/OSHA requirements. Meets Federal OSHA/ANSI requirements. All models have a 350 lb. capacity. Painted OSHA Safety Green Enamel Finish. There are various optional features and customization available. Call 800-404-7225 if you are interested in a custom Steel Folding Rolling Ladder. *Availability Varies*