HBA-121 300mm Aluminium Low Bay Housing Aluminiumreflector to provide high efficiency direct light distribution. Lamp Holder E27 porcelain lamp holder IP Rating IP20 for Open Type Wattage 70-150w Gasket Weather proof and durable silicone rubber Cable High temperature cable and high voltage pulse cable where applicable Gear Box Extruded aluminium gear box with precise fins to allow heat dissipation Three models of gear boxes recommended. : GB16 Lamp Type1 Metal Halide, High Pressure Sodium , Mercury Application Suitable fow low installation to light up area such as shopping malls , super markets , convenience stores , warehouse , storage.