45321000 - Thermal insulation work

CPV code 45321000 in the EU Common Procurement Vocabulary refers to Thermal insulation work. It sits at level 4 of the CPV hierarchy as a category within the 45 division. This code is nested directly under 45320000, narrowing the broader category into the specific area of thermal insulation work. As a leaf code, 45321000 has no further subdivisions and represents the most precise classification available in this branch — buyers should reference it directly in tender notices when the procurement primarily concerns thermal insulation work. Contracting authorities across the EU use 45321000 in TED notices and national procurement portals to signal that a tender relates to thermal insulation work.