IT 218 WS T8 Industrial Type Luminaire 2x18w Housing High quality cold-rolled steel housing of thickness 0.6 (T6) or 0.8mm (T8) Reflector Powderpainted sheel sheet reflector. Optional : 99.85% high purity anodized aluminium reflector Lamp Holder Heavy duty rotary-locked type lamp holder (TIS.344-1987 Standard) other lamp holder typs are available Rotary-locked type holder(G13) = WR , Waterproof type lamp holder = WP Wire Cable THW 1.0 sq.mm. 70'C (TIS.11-1988 Standard) IP Rating IP20 Installation suitable for general purpose with high efficiency requirement