Panel for external air-conditioning ducts and similar products

A panel for self-supporting ducts, comprising:

• a core of mineral wool, an external face of the core being covered with an exterior covering and an internal face of the core being covered with an interior covering, respectively,
• wherein said interior covering includes an aluminium sheet, a layer of a glass fabric, or a layer of a glass web,
• wherein the exterior covering includes a succession of a first layer of plastics material, the aluminium sheet, and a second layer of plastics material, said first and second layers of plastics material being bonded to the aluminium sheet directly or via an adhesive, said first layer of plastics material being bonded to the external face of the core by a glue, and
• wherein the second layer of plastics material is an outer layer including anti-UV particles or a UV-protective film, or a surface of the second layer of plastics material is covered with a UV-protective plastic film.