Suitable for indoor and outdoor use. Die-cast aluminium boby, rings and cap; highly resistant to oxidization thanks to the zirconium-based passivation treatment and UV stabilized polyester resin coating. Polycarbonate diffuser with triple UV stabilisation. Silicone gaskets. Reflector made of aluminium type L2-1060. A4 stainless steel nuts and bolts. Closing system by means of retractable captive hex screws size 2,5 mm.