Housing: in extruded aluminium, with cylindrical cross-section with a diam. of 180 mm. Base: in die-cast aluminium. Diffuser: in polycarbonate, transparent, anti-glare, shatterproof and V2 self-extinguishing, UV stablised. Coating: pre-treatment of metal surface, polyester powder coating to ensure resistance to corrosion and salt spray fogs, UV stabilised. Special coating: upon request: available with coating tested to withstand corrosion tests in agressive artificial atmospheres (UNI EN ISO 9227) or marine environments (sea front). Photobiological risk: exempt risk group according to EN62471. : EN60598-1. With degree of protection according to EN60529. Equipment: - with air circulation valve. - equipped with plug-socket for quick installation