ALUMINUM ROLLING LADDER IS NON-MAGNETIC AND NON-SPARKING. EASY ROLLING SPRING LOADED LADDER ROLLS FREELY AGAIN ONCE USER STEPS OFF. ALUMINUM ROLLING LADDER FEATURES GRIP STRUT STEP TREADS. 7"" INTERMEDIATE STEPS AND 14"" DEEP TOP STEP. ROLLING LADDER IS BUILT TO OSHA AND ANSI REQUIREMENTS. 350 LB. CAPACITY. PERFECT FOR USE WHERE CORROSION IS A PROBLEM OUTDOORS IN FOOD PROCESSING CHEMICAL PLANTS WAREHOUSES AND OTHER LOCATIONS.