Philips 22W 8 In. Bright White T9 4-Pin Circline Fluorescent Tube Light Bulb | Hammer & Wikan
Technical Precision FC8T9 22W Light Bulb Replacement for Ge General Electric G.e Fc8t9/cw 8 Inch T9 Fluorescent Circline Bulb - 4-Pin G10Q-4 Plug-in Base - 4100K Cool White - 1 Pack - - Amazon.com
T9 Circular Fluorescent Tube 22W - 216 mm in diameter - ElectroMaterial