The Grainger 16W967 is a Philips 16-watt T8 fluorescent light bulb that provides 1600 lumens of light output. This 4 foot long bulb has a medium bi-pin base and a color temperature of 4100K. It has an average rated life of 20,000 hours and meets EISA standards for energy efficiency. The Philips 16W967 T8 is suitable for use in commercial, retail, or industrial lighting fixtures.