The Philips 20-Watt Natural Light Linear Fluorescent Light Bulb (F20T12/NATURAL SUNSHINE) can be used in almost any room of your home or business. This fluorescent light bulb casts a bright glow that is similar to natural daylight. This bulb can be used for your general purpose lighting needs. Using 20-watts this linear light bulb can output up to 850 lumens and shine up to 20,000 hours.