1000w 4K Neutral Deluxe Metal Halide Conversion Lamp (Universal Burn). 1000 Watt Sunmaster Metal Halide 4K Neutral Deluxe Conversion Lamp. A Metal Halide Lamp you can burn in a High Pressure Sodium Ballast. May be burned in any position. Manufacture Code: LM.1000W.U37.NDXInitial Lumens: 105,000 Small BT 37 glass envelope.Sunmaster is the leader in Metal Halide lamp technology. Sunmaster designed this high tech lamp exclusively for the plant growth ind... — Ships from Portland, Oregon USA....more info.