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: the fully automated powder-coating cycle involves a polyester-based, salt-spray corrosion-resistant and UV-stabilised paint. Special coating: Upon request: protective coating recommended for marine environments within 5 km (3 miles) of the sea. Photobiological risk: exempt risk group according to EN62471. : EN60598-1. They have a degree of protection according to the EN60529 standard. Equipment: - with air circulation valve. - complete with waterproof connector for line connection.n