GE 48307 Soft White Double Life General Purpose A19 40-Watt. Use original GE 's Soft White when you need a light without glare and harsh shadows. These GE Soft White Double Life Bulb s provide the same quality of light and nearly the same brightness (*455 vs. 490 lumens) as 40-Watt regular soft white Bulb s. Yet, because they last twice as long and need to be replaced less often, they're perfect for hard-to-reach places. Bulb A19,-Wattage: 40, Product Code: 48307, Description: 40A/W/2L-4PK, UPC: 043168483070. GE incandescent lamps represents the state of the art of lamps for residential and commercial use, as well as special purpose lamps for decorative or display applications. In an incandescent lamp, light is generated by heating the filament to incandescence. The hotter the filament, the more efficient it is in converting electricity to light. However, when the filament operates hotter, its life is shortened so the design of each lamp is a balance between efficiency and life. This is why lamps of equal-Wattage may have different lumen ratings and different life ratings. Incandescent lamps of similar size are commonly available with different-Wattage ratings. The fixture-Wattage limit should not be exceeded.