Philips 13W 2 Pin GX23 Warm White Single Twin Tube CFL Bulb | PL-S 13W/27 | Bulbs.com
Amazing power 2-Pack 6W LED GX23 PL Lamp GX23d 2-Pin Base 13W CFL/Compact Fluorescent Lamp Replacement 120V Single Tube LED PL Horizontal Recessed Bulbs (Remove/Bypass The Ballast) (Daylight) - - Amazon.com
Plusrite 4028 13 Watt PL13W/2U/4P/835 PL Lamp
Feit Electric 13W/18W/26W Equivalent PL Vertical 4-Pin Universal Base G24Q/GX24Q-1/-2/-3 with CCT Select LED Light Bulb (12-Pack) PL26AVCCTLED/HDRP/12 - The Home Depot
Rieman Music, Inc. - Piano Lamp Bulb 13W-PL
Light Efficient Design 7W 2-Pin LED (13W CFL Equivalent), Ballast Compatible or Bypass, G23-2, 5000K | LED Lighting Wholesale Inc.
Philips 13-Watt GX23 CFLni 2-Pin CFL Light Bulb Soft White (2700K) 230102 - The Home Depot
Philips 146878 - PL-S 13W/850/2P ALTO Single Tube 2 Pin Base Compact Fluorescent Light Bulb - Fluorescent Lamps - Amazon.com