Philips ALTO Fluorescent Lamp, Type TL Energy Saving, F28T5/835 ALTO 40PK Designation, 28 W Wattage, 0.17 A, G5 Lamp Base, T5 Shape, 2900 Lumens, 20000 hr Average Life, Warm White, 82 CRI, 3500 K Color Temperature, 46 in Length, 5/8 in Diameter, Programmed Start