Feit Electric 13-Watt Equivalent PL CFLNI Quad Tube 4-Pin G24Q-1 Base Compact Fluorescent CFL Light Bulb, Cool White 4100K (1-Bulb) BPPLD13E/41/HDRP - The Home Depot
27 Watt Compact Fluorescent lamp Medium Base 120V — LightStoreUSA
Satco S7217 13 Watt (60 Watt Equivalent) Warm White Mini Spiral Compact Fluorescent Light Bulb - 120V (T2)
Philips 13W 2 Pin GX23 Warm White Single Twin Tube CFL Bulb | PL-S 13W/27 | Bulbs.com
Sleeklighting 13 Watt Spiral CFL Black Fluorescent Light Bulb Medium Base UL-Listed - Walmart.com
Xtricity CFL T2 60W Eqv (13W), 2700k Soft White, 900 Lumens, E26 Medium Base, 120V, UL Listed (Pack of 2) - Amazon.com