Use the 200 watt compact fluorescent bulbs to replace your existing 300-400 watt bulbs, wherever you want to provide full spectrum 6400 Kelvin cool natural light which is comparable to natural daylight. \n \nThese self ballasted lamps work well in horticultural applications or as warehouse, shop , or barn lighting. \n \nAlmost anywhere you need bright, brilliant full spectrum lighting. \n \nThese Big Watt CFLS require a mogul socket (E39) to operate. \n \nMade for Horticulture \nSpecifications \n \nLight Output \n13,650 Lumens \nEstimate Lamp Life \n8,000 Hours \nPower Consumption \n200 Watts \nRated Life \n8,000 Hours \nVoltage \n120 Volts \nColour Rendering Index \n81 CRI \nBase Type \nMogul Socket E39 \nItem # 6400K - Grow \nItem # 2700K - Flower