This 24-inch T5 fluorescent bulb is great for orchids, seedlings, under cabinets, aquariums, etc. No noise, rapid start and low heat bulb. No frequency flickering. It includes electronic ballast, clips, fixture and bulb. Comes with 6-feet power cord and daisy chain cable to connect up to 8 units. Maximum wattage is 24, color temperature 6400K. 120-volt, 60-hertz frequency. 20,000 average rated life hours and T5 base type. This product weighs 1.1-pound. Measures 1-8/9-inch length by 1-1/3-inch width by 29-2/5-inch height.