Designers Edge L190 Fluorescent 24-Inches Single Bulb Strip Light, Electronic Ballast Works in Lower Temperatures of Minimum -20&deg;, Uses a 20 Watt T-12 or a 12 Watt or 18 Watt T8 Fluorescent Tube Electronic Ballast works in lower temperatures of minimum -20 degree Uses a 20 watt T-12 or a 12 watt or 18 watt T8 fluorescent tube Bulb not included Direct wire cUL Listed