TCP 28927M-41-277 - (277 Volt) 27 Watt - 100 W Equal - 4100K Cool White - Min. Start Temp. - 20 Deg. - 82 CRI - 68 Lumens per Watt
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277 Volt Flourescent Lamp.
This has been a very cost effective replacement for 50 Watt metal hallide lamp and ballast in walkway lighting.
For the price of a equal metal halide lamp we are getting the same lumen output and a slight savings on engery use. Add that we do not have to spen money and time on replacing ballast kits it is a great saver. Next step will be using LED's when they become cost effective.
March 16, 2012