iPower 1000W Double Ended Grow Light System Kits for Indoor Plants includes 1000 Watt DE HPS Bulb and Adjustable Reflector and Digital Dimmable Ballast 240V 1000W 240V Double Ended Digital Dimmable Ballast: 600/750/1000/1150W optional output, UL listed and FCC certified Super HPS+ (Pro-Plus) Double Ended HPS Bulb; PAR 2100um+, provides 35% more energy than Standard HPS Lamp Bulb 3-Mode Double Ended Adjustable Reflector: German made VEGA98 Aluminum Layer, 98% efficiency 8-Feet Adjustable Ratchet Clip Rope Hanger with Metal Gears: hold up to 150 lbs This system will generate too much heat to be used in an enclosed area without ventilation. Adequate ventilation is required for all 1000W system. We recommend the use of an iPower inline fan. For optimal performance, the bulb should be replaced once a year