Ulti-Lumenx Intelsun1000HM 1000 Watt Grow Light Digital Dimmable HPS MH System for Plants Air Cool Tube Hood Set 1- 1000 Watt Dimmable Electronic Fan Cooling Ballast; Acceptable input: 110v - 240v. Dimmable Option: 50%, 75% & 100%, Runs 20% cooler than other digital ballasts on the market. 1 - Air Cool Tube: 26" x 25" x 7" Duct Size: 6" Made of Glass & German Aluminum 1 - HPS Bulb: Lumen - 140,000 1- Pair of Rope Hanger : Weight Capacity - 150 lbs per pair w/ Improved Metal Internal Gears