SUNMASTER 600w 6K Cool Deluxe Metal Halide Conversion Lamp (Universal Burn). SMC600CU Sunmaster 600 watt 6K Cool Deluxe Conversion Bulb. Metal Halide Bulb for use in a High Pressure Sodium Ballast Lamp may be burned in any position. Manufacture Code: LM.600W.U25.CDX Initial Lumens: 50,000