Use 75% less Energy by replacing your 100 watts light bulbs with Feit Electric 6 Pack CFL Twist Light Bulbs. It lasts 13 times longer than regular light bulbs. The light bulbs have a light output of 1600 Lumens and 10,000 lifespan hours. The six-pack Feit Electric light bulbs come packaged in a 15" x 5.35" x 2.50" box.