Housing: in extruded aluminium with end caps. Diffuser: in polycarbonate, shatterproof and V2 self-extinguishing, UV stablised. Externally smooth and anti-dust, internally multi-grooved to increase light diffusion. Coating: polyester powder coated, UV-stabilised, anti-yellowing, phosphate pre-treatment. Photobiological risk: exempt risk group according to EN62471. : EN60598-1. They have a degree of protection according to the EN60529 standard. Equipment: in silicone rubber; external stainless steel screws.