Hamilton Technology ReefStar Metal Halide Lighting Pendant Fixtures are for reef aquariums. They can be be easily hung from the ceiling. Features:One 150 Watt 10K HQI Metal Halide BulbDimensions: 16.5" X 10.25" X 3.5"Tempered glass lensHighly reflective hammertone reflectorHanging wires includedRecommended Accessories:To keep the light cycle consistent, we highly recommend using a timerReplacement Parts:We carry all the metal halide replacement lamps and many of the replacement partsNOTE: This item is drop-shipped directly from the manufacturer. We do not offer expedited shipping for this item.