Ladders provide access to elevated and hard-to-reach areas. Stepladders are self-supporting and collapse for storage and transport. Platform stepladders have large standing surfaces and guardrails to help keep workers stable and comfortable. Straight ladders lean against surfaces, have fixed lengths, and don't have moving parts that can wear out. Extension and telescoping ladders lean against surfaces and extend to provide access to high areas. Multifunction ladders adapt to various working environments. Rolling ladders have casters that allow them to move easily around work areas. Crossover ladders and bridges allow workers to move safely over obstacles. Attic ladders make accessing attic spaces convenient. Fixed ladders and safety cages secure onto structures to provide access from one level to another.