GE Lighting 49356 32-watt 2800-Lumen T8 Light Bulb with Medium Bi-Pin G13 Base, 12-Pack 48-Inch in length 1.0-Inch diameter T8 with medium bi-pin (g13) base Uses 32-watt Provides 2800 lumens Lasts 9.1 years based on 6 hours per day usage