2GX13 Cap/Base Light Bulbs & Lamps - The Lightbulb Co. UK
Satco Part # S8155 - Satco 22-Watt 9 In. T5 2Gx13 Base Circline Fluorescent Black Light Tube Light Bulb In Warm White - Fluorescent Light Bulbs - Home Depot Pro
40 Watt Fluorescent T5 Circline 12 In. Light Bulb with 4 Pin (2GX13) Base, 4100K - FPC40/