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2 x 2ft F18w (18w) T8 Triphosphor Fluorescent Tube Colour: 835 Standard White [3500k] (Philips 18835) - Amazon.com
Amazon.com: Philips LED-Universal Fit 4-Foot T8 Tube Glass Light Bulb, EyeComfort Technology, Non-Dimmable, 1800 Lumen, Daylight Deluxe (6500K), 16W=32W, Medium Bi-Pin G13 Base, 2-Pack, Frosted White (539171) : Everything Else
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Amazon.com: Philips LED InstantFit 4-Foot T8 Tube Light Bulb 1800-Lumen, Cool White (4000K), 16W=32W, Medium Bi-Pin G13 Base, 8-Pack : Everything Else