This is SunBlaster"s New 18" (1.5 ft or 46cm) T5 HO Fluorescent Combo Grow light kit with electronic high efficiency Ballast, Full Spectrum 6400K, High Output, 17 watt SunBlaster grow light bulb combined with the new Nanotech Reflector which redirects up to 300% more light to the plant canopy. * The SunBlaster T5HO high output fluorescent grow light bulb and ballast together with the Nanotech reflector are truly made for each other. The end result? The most amazing fluorescent grow light kit SunBlaster has ever produced! * Sun Blaster T5HO (High Output) Fluorescent Grow Lighting Combo Kits provide everything you need to get up and growing fast! Each Sun Blaster T5 HO kit includes the latest, most efficient electronic ballast, a 6400K Full spectrum grow light bulb, a power cord with roller switch and both hanging and flat surface easy mount clips. * Use SunBlaster T5HO grow lighting to provide supplemental overhead and side lighting, as well as additional light for tall plants when hung vertically. The slim design of Sunblaster"s new T5HO"s allows them to fit virtually anywhere you need additional light for growth. * With Sun Blaster"s T5HO Grow Light Ballast, each New Edition has been re-engineered, incorporating the most advanced on board electronics in the industry providing minimal heat, maximum efficiency and extending lamp life.