From the Manufacturer
GE 24691 Energy Smart 11 Watt Indoor Floodlight R20 CFL 50-Watt Replacement 24691 - FLE11/2/R20SW/CD GE R20 Bulb R20, Product Code: 24691, Description: FLE11/2/R20SW/CD, UPC: 043168246910. GE Compact Fluorescent lamps (CFL) offer many advantages that include cost savings, extra long life, light output, and color rendering. With this CFL you'll get dramatic energy cost savings up to 77 percent vs. incandescent lamps of comparable light output. The extra long life most last 8 to 10 times longer, and some last up to 20 times longer, than standard incandescent lamps. High light output comparable to, and in many cases exceeding incandescent lamps replaced. Excellent color rendering rare earth tri-phosphor provides such high-quality color you won't believe it's fluorescent. Many lamps use amalgam technology which provides stable lumen performance when operated in any position, over a wider, range of ambient temperatures.