18 Watt LED Corn Bulb - Aries S Series - 2,430 Lumens -4000K
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GoodBulb 27 Watt Canopy LED Area Light | 200 Equalivalent | High Output 3800 Lumens & 141 Lumens Per Watt | Non-Dimmable HID Area Light | 1 Pack - - Amazon.com
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LEDs Will Get Even More Efficient: Cree Passes 300 Lumens Per Watt
Cree hits 303 lumens per watt in LED demonstration unit | Electrical Wholesaling
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How many lumens are in a watt? - Quora
Toward 200 Lumens per Watt of Quantum-Dot White-Light-Emitting Diodes by Reducing Reabsorption Loss | ACS Nano
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