Sylvania 20313 - CF9DS/E/827 Single Tube 4 Pin Base Compact Fluorescent Light Bulb - Amazon.com
Amazon.com: Satco CFT32W/4P/827/ENV - S8349 : Tools & Home Improvement
Technical Precision Replacement for Osram Sylvania Dulux S 13w/27k Light Bulb 13W Compact Fluorescent Bulb with 2-Pin GX23 Base - T4 2700k Warm White CFL - 1 Pack is Compatible with OSRAM
Sylvania Dulux 13 Watt Single Tube T4 Compact Fluorescent Lamp With 2-Pin Base, 2700K Color Temperature, 82 CRI - Cf13Ds/827/Eco 20331 - Osram Bulb - Amazon.com