Philips SON-T Master GreenPower Lamp 

Manufacturer:  Philips

SON-T Master GreenPower lamps have been the work horse of the Europeon horticultural market for years and is now available in the USA. These High Pressure Sodium (HPS) bulbs have Philips' PIA technology for increased reliability and lower early failure rate, with reliable ignition throughout lifetime. 

Producing 2000 degrees Kelvin, the SON-T grow lamps are ideal for growing vegetables and flowers.

Use as supplemental light to raise growth light levels in order to enhance photosynthesis to improve plant growth or alone as artificial light for garden cultivation without daylight.

A clear Universal bulb with mogul base, the SON-T Master GreenPower lamp is completely lead-free. It produces higher than normal lumens:

400 watt: 55,000 lumens
600 watt: 90,000 lumens

Dimensions for 400W and 600W: 11.1" Long x 1.81" Diameter