At SupplyApp, you'll find a step ladder in a variety of sizes, materials, and duty ratings. When fully assembled, step ladders range in height from 3' to 20'H, and many have molded tops to keep tools close at hand. Slips and falls can be avoided by using non-slip treads. Stepladders with a broad base are more stable, and rubber-clad feet lessen the risk of slipping. 225 lb. to 500 lb. duty ratings are available. With aluminum, fiberglass, and blue fiberglass construction, choose from ANSI Type I, IA, IAA, and II step ladders.