Feit Electric 13W/18W/26W Equivalent PL Horizontal 4-Pin Universal Base G24Q/GX24Q-1/-2/-3 with CCT Select LED Light Bulb (4-Pack) PL26AHCCT/LED/HDRP/4 - The Home Depot
Philips 18W 4 Pin 2G11 Cool White Long Single Twin Tube CFL Bulb | PL-L 18W/41 (4-Pin) | Bulbs.com
Philips 18W 4 Pin G24q2 Very Warm White Double Twin Tube CFL Bulb | PL-C 18W/827/4P/ALTO (4 Pin) | Bulbs.com
Golonlite 4 pin 2g11 base led 18W replace 36W PLL lamp 417m CE 12W 9W led 2g11/4 p tube light Factory RA80 3 years warranty|LED Bulbs & Tubes| - AliExpress
Feit Electric 18-Watt Equivalent PL CFLNI Quad Tube 4-Pin G24Q-2 Base Compact Fluorescent CFL Light Bulb, Soft White 2700K (1-Bulb) BPPLD18E/HDRP - The Home Depot
Feit Electric 18W Equiv PL CFLNI Quad Tube 4-Pin Plug-in G24Q-2 Base Compact Fluorescent CFL Light Bulb, Cool White 4100K (24-Pack) BPPLD18E/41/HDRP/24 - The Home Depot