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2 Pack 20w T4 Fluorescent Tube Warm White (3400K, 568mm - excl pins) Check Length Carefully : Amazon.co.uk: Lighting
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F20T4-CW - Wattage: 20W, Base Type: G5 (miniature bi-pin), Type: T4 Fluorescent Tube, Color Temp (Kelvin): 4100K, - Walmart.com
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Norman Lamps F20T4-DL 20.5 in. Daylight - Watts: 20W, Type: T4 Fluorescent Tube, Color - - Amazon.com
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Dencon Accessories - LYVIA 20W T4 FLUORESCENT TUBE 6200K DAYLIGHT, 1151 LUMENS. 522MM LONG INCLUDING THE PINS.
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