4' Grow Light System, When Germinating Seeds System Fixture Can Be Kept Just Inches Away From The Seeds Or Humidity Dome, After Sprouting, Keep The Fixture 3"-6" Away From The Plant Canopy, Simple Toggle Clamp For Easy Lamp Height Adjustment, Internal Reflective Finish Directs More Light To Plants, 24" Interior Width, Includes Stand, Fixture & T5 Tube, CE Certified, Replacement Bulbs TV #157-907 #157-908 #181-045.