GE Lighting 10778 T12 Straight High Output Linear Fluorescent Lamp 60 Watt R17d Recessed Double Contact Base 3400 Lumens 75 CRI 6500K 48 Inch Length Daylight Color/Finish: Daylight Color Temperature: 6,500K Average Lifetime: 12000 hours Lumens (light output): 3400 CRI: 75