RLM Deep Bowl Dome, Industrial Grade Shade, Provides Lamp Shielding and Compact Size Measurements Diameter: 10"Height: 9-1/4" Special Features This dome is made of 18 gage, cold-rolled steel and coated with genuine powder coat or an exquisite plated finish. Ballast Options FluorescentMetal HalideIncandescentHigh Pressure Sodium ballast requires a remote box(cat# 884RTE or 884SCE) Notes Max Suggested Wattage: 150W