BELL 16w 2D Butterfly CFL lamp (Exun-DD, GR8, white 3500K, 2-pin) - Amazon.com
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TBE Lighting 16w 2D 4-PIN CFL Energy Saving Lamps - DD Fluorescent Bulbs - 4-Pin GR10q Base Fittings - Long Life Lamp, Cool White : Amazon.co.uk: Lighting
TBE Lighting 16w 2D 4-PIN CFL Energy Saving Lamps - DD Fluorescent Bulbs - 4-Pin GR10q Base Fittings - Long Life Lamp, Cool White : Amazon.co.uk: Lighting