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BEW Direct - 14W T5 Fluorescent Tube Cool White HE High Efficiency 240V 549mm
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The Light Bulb Shop | Osram T5 Lumilux HE High Efficiency
OSRAM 1449mm 35w T5 HIGH EFFICIENCY FLUORESCENT TUBE IN COLOUR 830/WARM WHITE | eBay
ECLIPSE T521865 T5 FLUORESCENT LAMPS 21W, Col 865 - 849mm
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Philips T5 TL5 High Efficiency Fluorescent Tube Lamp 14W/21W/28W | eBay
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FH21w/F21w - 21w T5 Fluorescent Tube - LampShopOnline
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Historical increase in efficiency of lighting technologies. Efficiency... | Download Scientific Diagram
Osram Lumilux T5 High Efficiency, Fluorescent Lamps 35 W/827 : Amazon.co.uk: Lighting
