Attributes . FLuorescent Lamp, Recessed Double Contact R17D Base, T12 Bulb Shape, 60, 20000 h Average Life, 4100 k, Cool White, 60 W, 3825 lm Brightness (Lumens), Soda Lime Housing Material, 1.5 in Diameter, 48.0 in Length, Rapid, 0.68 lb/EA . Names