SIT Simple Industrial Type Luminaire Housing High quality cold-rolled steel sheet of thickness 0.6mm (T6) Reflector 99.85% hugh purity anodized aluminium reflector with Total Reflectance of 87% (87) Lamp Holder Heavy duty rotary-locked type (TIS.344-1987 Standard) Wire Cable THW 1.0 sq.mm. 70'C (TIS.11-1988 Standard). Optional: 105'C 18AWG UL Standard. IP Rating IP20