Sunlite 40-Watt Equivalent 22 in LED Tube Light 2G11 Base Recessed Plug and Play Twin Light Bulb, 3500K Neutral White (1-Pack) HD03539-1 - The Home Depot
24 Watt Long Twin Tube Compact Fluorescent PL Bulb with 4-Pin (2G11) Base, 3500K - FT24DL/835
Philips 24W 4 Pin 2G11 Neutral White Long Single Twin Tube CFL Bulb: Amazon.com: Tools & Home Improvement
Philips 40W 4 Pin 2G11 Neutral White Long Single Twin Tube CFL Bulb | PL-L 40W/35/RS/IS (4-Pin) | Bulbs.com