Yield Lab Pro Series HPS+MH 1000W Air Cool Hood Double Ended Complete Grow Light Kit TheYield Lab Professional Series Air Cool Hood 1000W HPS Double Ended Grow Light Kit will give you more power and versatility than standard single-ended hood reflector grow light kits The Air Cool Hood offers a collapsible glass shield for simple bulb removal and replacement; 6" air duct ports for quick bulb and garden cooling; and multiple points of reflection for full and stronger light coverage The Yield Lab Slim Line Ballast's heat dissipating design allows for optimal cooling, and the microprocessor is controlled with an electronic safety circuit for optimal safety during use This digital dimming ballast included are adjustable by 50%, 75%, 100%, and SUPER LUMENS (around 110%) of the grow light power; and 240v power chord compatible, and are perfect for warehouse grows and energy-efficient homes Package Includes: Yield Lab Double Ended Air Cool Hood Reflector, Yield Lab 1000w Slim Line Digital Dimming Ballast, 1x Yield Lab 1000w Double Ended HPS Bulb, 1x Timer, 2x Rope Ratchet Hangers