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T5 Circline Circular Fluorescent Tube 40W 2GX13 4000K - John Cribb & Sons Ltd, UK Electrical Distributors, Dorset, Hampshire, Wiltshire, Somerset & the Isle of Wight.
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T9 LED Circline Light Bulb, 8 Inch 1600LM LED Circular Light, 13W Clear Cover 4000K Soft White Replacement for FC8T9 22-Watt Fluorescent Circular Bulb(FC8T9), Ballast Bypass Required : Amazon.co.uk: Lighting
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