CPV code 42416400 designates Escalators in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
42416400 is a leaf code — the most specific level of its branch — so it can be used directly as the main CPV code of a contract notice. If it does not quite fit, check the neighbouring codes under 42416000 (Lifts, skip hoists, hoists, escalators and moving walkways).