EiKO's LU1000/TD/Hort HID lamps feature a clear outer bulb for optimal growthlight output and maintenance, extremely low mercury and lead content to pass federal TCLP testing, and a high lumen output to yield significant energy savings. LU100/TD/Hort lamps have a 10,000 hour rated life and provide 146,000 lumens. Use with special horticultural lamp 1000W driver.