Apollo Horticulture GLK400CTAC1HPS 400 Watt Grow Light (1 HPS Bulb Only) Digital Dimmable HPS MH System for Plants Air Cool Tube Hood 1- 400 Watt Dimmable Electronic Fan Cooling Ballast; Acceptable input: 110v - 240v. Dimmable Option: 50%, 75% & 100% 1 - HPS Bulb: Lumen - 53,000 1 - Air Cool Tube: 26" x 25" x 7" Duct Size: 6" Made of Glass & German Aluminum 1- Pair of Rope Hanger : Weight Capacity - 150 lbs per pair w/ Improved Metal Internal Gears; One Click at a Time Package Includes: 1  Reflector / 1  HPS Bulb / 1  Digital Ballast / 1  Pair of Hangers / 1  Instructional Pamphlet