Philips 18W 4 Pin 2G11 Cool White Long Single Twin Tube CFL Bulb | PL-L 18W/41 (4-Pin) | Bulbs.com
BEYOND LED TECHNOLOGY 18-Watt Equivalence T8 Tube LED Bulb in Bright White 5000K 4 ft. 2724 Lumens Frosted Type B Single and Double (25-Pack) 153482-1 - The Home Depot