Gavita horticultural High Pressure Sodium (HPS) lamp with high output and extreme long light maintenance. The control range of this lamp is 400- 825W, bridging the gap between 600W and 1000W lamps. We named it 6/750 DE FLEX because it is as efficient running on 600W as it is on 750W. In many cases it is a retrofit replacement for a 1000W air cooled fixture, while running at just 825W. This will save you up to 20% electricity. The output of the lamp, running at 750W, is 1500 µmol s-1 (2 µmol s-1 per Watt). Suitable for High Frequency Gavita Pro 6/750 Watt ballast (Pro-line) Power: 750 Watt Lamp base: K12 x 30S (Double Ended) Growlight (µMol): 1500 Light maintenance 1 year (5000 hours):: >95% Voltage: 200V Article Number: 26.74.16.11 EAN code: 8718403054149 The jacket of this double ended lamp is made from quartz glass. Do not handle with bare hands. Oil from your hands can damage the lamp.