Yield Lab Horticulture 400w HPS Grow Light Cool Tube Reflector Kit &ndash; Easy Setup High Output Full Spectrum System For Indoor Plants And Hydroponics &ndash; Free Bonus Mechanical Timer RELIABLE AND CONSISTANT: The Yield Lab Cool Tube reflector utilizes high reflective aluminum shielding to ensure that it provides the most efficient balanced light penetration and coverage. High efficiency UL, CE and RoHS certified 400w Yield Lab dimmable ballast includes ignition control, soft start, pre-ignition failure checks and larger heatsinks for increased cooling INCLUDED COMPONENTS: 1x Yield Lab 400w digital dimmable ballast 120~240V (120V power chord included), 1x Yield Lab 400w high pressure sodium bulb (HPS), 1x Yield Lab Air Cooled Reflector Tube, 1x ratchet light hangers, 1x FREE BONUS Analog timer HIGH PERFORMANCE SUPER LUMEN BALLAST: Featuring dimming control you can effectively reduce lumen intensity and heat as low as 50% for early stages of your plant growth as well as boost the output by 10% with the Super Lumen feature for later flowering stages. Industrial grade internal components provide steady power, increased PAR, eliminates flicker and boosted yields FREE BONUS 12 WEEK GROW GUIDE: Exclusive 12 week video guide that shows step by step instructions on how to successfully grow indoors and all the information you will ever need to grow seasonal gardens all year long or medical-grade crops. Whether your a first time or seasoned grower this guide has plenty of knowledge to offer you. The information provided is over 10 years of growing experience in just several days INDUSTRY LEADING WARRANTY AND TOP CUSTOMER SERVICE: Manufactures warranty covers your ballast for 3 years and bulbs for 1 year. Lifetime support by phone and email and 100% Satisfaction Guarantee High reflective surface utilizes all usuable light produced 6&#034; duct ports makes connecting fans and filters easy 99.99% Air tight seal provides optimal cooling for bulb when using inline fan Ideal for grow tents Dimmable with super lumen feature Open circuit, short circuit ignition failure and over heat protection 25&#034; L with 6&#034; Air Duct Ports Maximum airflow and cooling ETL and CE Certified Silent cooling fan extends ballast lifespan Quick change fuse protects ballast from spikes in electricity High effeciency and high output ETL and CE Certified High lumen output High heat tolerance for long lifespan