Quadratum G2 Surface: Quadratum G2 Surface is a sealed luminaire suitable for use in tough environments. Designed to prevent the ingress of dust and moisture when used in clean room environments. IP65 and rated to IK14 (100 joules of energy) ensuring a high level of impact resistance. Surface mounted installation. Zinc coated steel body finished in white polyester powdercoat. Opal polycarbonate diffuser held against steel frame by silicone gasket seal. Integral electronic control gear with fused terminal block. Efficacies of >130 lm/W. Colour Temperature:4000K CRI:>80 LED Lifetime L80B10>72,000h at 25oC ambient.  Driver Lifetime up to 100,000h at 25oC ambient.