Abstract: A method of, manufacturing refrigerating units (equipment), such as refrigerating and refrigerated showcases, store fixtures and the like, including forming walls, partitions and/or panels having a layer of plastic foam formed in situ. Standard modular elements are produced, each constituting a portion of a wall, bottom or upper portion of the unit to be constructed. Each element is provided with respective stepwise tiers formed along its two longer edges and along its two shorter edges with respective outwardly extending protuberances formed from the layer of plastic foam. The modular elements are assembled along their longer edges, at least some of the shorter edges also being in contact. Units made by the method are described.